rear-window defogger
Q: Imagine you are driving a car up Pike’s Peak in Colorado. To raise a car weighing 1000 kilograms a…
A: Given: The terms of efficiency, what factors may keep you from realizing your ideal energy use on…
Q: 7. A conducting wire has a cross-sectional area of 2 mm² and a specific resistance of 5x10 m.…
A: As per the guideline of Bartley we supposed to answer first three subpart only.
Q: For the figure attached, a. what is the relations hip between voltage and current? b. does the…
A:
Q: An electric heater is connected to a constant 250-V source and absorbs 1000 W. Subsequently, this…
A: Given, For an electric heater, V1=250 VP1=1000 WV2=200 V
Q: In a design task, a wire of 2000 m requires to exhibit a voltage drop of 2.5 V when 3.2 A of current…
A: We need to choose the most suitable wire from the given table Q1. (b),which will satisfy the…
Q: Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of…
A:
Q: A solenoid has a length of 88cm and has a core of free air. It is wound with 4600 turns of wire and…
A: In this question we will find area of solenoid with given data .
Q: b. A heater coil is made using a material of cross section 3x10-“m² and a resistivity of 4 x100-m. A…
A: The power dissipated in the coil is given by :- P = V×II = PVI = 455050R = VI = 50×504550…
Q: a) Explain the importance of thermal management of electronics devices.
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: light bulb has a 25 W rating, and it is plugged into a socket with terminals at a 220 V potential…
A: Power is given as the product of voltage and current P =i×v i = v/r Rearrange the equation and…
Q: The capacity of a car battery is usually specified in ampere-hours. A battery rated at, say, 100 A-h…
A: Capacity of battery is given 100 A-h Means 100 A current flow in 1 hour. Charge is given by,…
Q: 1. What is the goal of circuit theory? 2. Why would we want to use circuit theory and when can we…
A: Circuit: The electrical circuit is made up of a resistor, inductor, capacitor, voltage source,…
Q: Solve the following Numerical problems a. What is the Output Voltage of a battery that expends 7.2J…
A: Since there are multiple questions present, according to company policy we will be answering only…
Q: (i) In a 39KV overhead line, there are 3 units in the string of insulators. If the capacitance…
A: I HAVE EXPLAINED IN DETAIL
Q: What is the relationship between the voltage across the power and the current? (P = I V )
A: Voltage :- voltage is potential difference between two point in circuit. It is denoted by V.…
Q: The resistance of a given electric device is 46 ohms at 25 °C. If the temperature coefficient of…
A: In this question The resistance of a given electric device is 46 ohms at 25 °C. If the temperature…
Q: A sample of wire (1 mm in diameter by 1 m in diameter) length) of an aluminum alloy (containing 1.2%…
A: Given: A wire of aluminium alloy is placed in electrical circuit such that its parameters are
Q: The resistance of a thermistor is 800 2 at 50 °C.and 4 kQ at the ice-point. Calculate the…
A: At, T1=273 K, R1=4 kΩT2=323 K, R2=800 ΩBy Thermistor equation,B=T2 T1T2-T1 ln R1R2B=323273323-273 ln…
Q: Q2: A Si bar 0.1 cm long and 100µm? in cross sectional area is doped with 1017 cm-3 phosphor. Find…
A:
Q: If a coil of wire has a resistance of 20ohms at 40oC and 20 at 80oC,what will be the resistance of…
A: Given, R40=20 ΩR80=100 Ω
Q: A wire of resistance 5.0 ohm is connected to a battery whose emf is 2.0 V and whose internal…
A: Please refer the attached images for the complete answer..
Q: A variable resistor enables one to change the resistance. One design involves a horizontal tube of…
A: Given wire diameter (d) =1 mm tube radius =R =2.5 cm Change in resistance Rchange =3 ohms
Q: Q5 / The resistance of a platirum thermometer wire measured at 50C°, 200C° and 500C° is 14,20322 ,…
A:
Q: Illustrate and discuss the processes involve in transforming the primary source to the final output…
A: Wind turbines work on a simple principle: rather than using electricity to create wind (like a fan…
Q: 3) a) A wire sample (1 mm in diameter by 1 m in length) of an aluminum alloy (containing 1.2% Mn) is…
A: Voltage drop across the length= 432 mV. And current through it= 10 Amp. From ohm's law we know,…
Q: Solve the following problems If a 100-V resistor is connected across the terminals of a 12-V…
A: Use ohms law V=I*R Since it is pure resistance network...
Q: Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of…
A: In this question, We need to determine the resistance R at the 25°C temperatures?
Q: A typical 12-V automobile battery, storing about 5 megajoules (MJ) of energy, is connected to a 4-A…
A: (a) The voltage delivered by the automobile battery E=12 V The current rating of the headlight…
Q: Q. For the circuit shown below, find the following 1. The name of this eircuit is
A: Since you have asked multiple questions, we will solve the first question for you. If youwant any…
Q: 4. Consider the problem of using a low-voltage system to power your little cabin. Suppose a 12-V…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: Problem 4: In order to calculate the heat loss through the wall of a building, it is necessary to…
A: As per bartleby expert policy, only first individual question is to be answered. Kindly repost…
Q: Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of…
A:
Q: BASIC ELECTRICAL ENGINEERING - ELECTRIC CIRCUIT Draw a simple circuit diagram of circuit consisting…
A:
Q: A coil of copper wire has resistance of 90 Ω at 20°C and is connected to a 230- V supply. By how…
A:
Q: Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of…
A: Givent1=25oCα=0.003/Cot2=58oCR2=588 ΩR1=?
Q: The resistance of the wire used for telephone is 35 52 per kilometre v ht of the wire is 5 kg per…
A:
Q: Find and explain the Ohm conservation expression. b) Stable current circulation is desired for the…
A: Ans(a) Drift current is a electric current which is caused by a particle pulled by the electric…
Q: 4. Consider the problem of using a low-voltage system to power your little cabin. Suppose a 12-V…
A:
Q: The resistance of a coil aluminum wire at 21OC is 210Ω. The temperature of the wire is increased and…
A:
Q: The resistance of the wire used for telephone is 35 0 per kilometre when the weight of the wire is 5…
A:
Q: In the figure the resistances are R1 = 1.1 N and R2 = 2.2 N, and the ideal batteries have emfs ɛ =…
A:
Q: What is ohm's law and what its connection to between voltage, current, and resistance?
A:
Q: you have several wires made from different Ohmic materials with different lengths different radii r,…
A: Resistance of a wire R=(resistivity×length of wire)/area of…
Q: Two cities separated by 10,000 ft is connected by telephone wires whose thermal coefficient of…
A: given two cities are separated by 10,000 ft is connected by telephone wires. given thermal…
Q: Question 1 a) In a closed circuit, an electric current of intensity i goes through a resistor of…
A: a) is the expression from ohm's law and it shows the resistance across when there is a potential…
Q: If you plot V/i characteristic of a resistor, which parameter of this characteristic gives value of…
A: Answer -
Q: The table shows the values for the current, I, in an electric circuit and the resistance, R, of the…
A: a) b) From the above graph, it is observed that the resistance is decreasing with increasing…
Q: 6. a. The potential difference across the terminals of a battery is 8.5 V when there is a current of…
A: Kirchhoff's voltage law: It states that in any closed circuit or loop, the total voltage around the…
Q: Solve the following problems with complete solutions and units using 2 decimal digits: The…
A:
A rear-window defogger in a car consists of 13 resistive wires connected in parallel to a 12-v battery. Assume that the defogger can melt 2.1 x 10-2 kg of ice at 0C to liquid water at 0C in two minutes. Each wire has a length of 1.30m. What should the resistance/ length of the wires be? Your answer should be in ohms/m.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
- You are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M to ground. Your ohmmeter, however, indicates a resistance of 1.5 across terminals S1andS2. The ohmmeter indicates a resistance of 225 between terminals F1andF2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer.In the figure the ideal batteries have emfs ɛ1 = 20.4 V, ɛ2 = 9.05 V, and ɛ3 = 5.40 V, and the resistances are each 2.40 Q. What are the (a) size and (b) direction (left or right) of current i,? (c) Does battery 1 supply or absorb energy, and (d) what is its power? (e) Does battery 2 supply or absorb energy, and (f) what is its power? (g) Does battery 3 supply or absorb energy, and (h) what is its power? (a) Number i Units (b) (c) (d) Number i Units (e) (f) Number i Units (g) (h) Number i UnitsThe temperature coefficient of resistivity of carbon is -0.0005/C° . If the resistor is made of graphite as a resistance of 5 kΩ at 20°. find the resistance at 27°
- An aluminum wire 7.5 m long is connected in parallel with a copper wire 6 m long. When a current of 5 A is passed through the combination it is found that the current in aluminum wire is 3 A. The diameter of aluminum wire is 1 mm. Determine the diameter of the copper wire. Resistivity of copper is 1.7 x 10 -6 ohm-cm and that of aluminum is 1.724 micro-ohm-cm.8. The resistance of a copper at 30°C is 50 ohms. If the temperature coefficient of copper at 0°C is 0.00427. What is the resistance at 100°C? 9. A wire has a resistance R are cut into 2 pieces and the small pieces are connect in parallel resulting to a total resistance of 2 ohms. What is the value of R?An aluminum wire 5m long and 2mm diameter is connected in parallel with a copper wire 3m long. The total current is 4 A and that in the aluminum wire is 2.5 A. Find the diametre of the copper wire. The resistivity of copper wire being 1.7 micro ohm meter and that of aluminum taken Al 2.6 micro ohm meter
- Some copper wire has a resistance of 200 at 20 ° C . A current is passed through the wire and the temperature rises to 90 ° C . Determine the resistance of the wire at 90 ° C , correct to the nearest ohm , assuming that the temperature coefficient of resistance is 0.004 / C at 0 ° CThe resistance of wire increases from 40 – ohm at 20 0C to 50 – ohm at 70 0C. Find the temperature coefficient of resistance at 0 0C.You want to produce three cylindrical wires with a diameter of 1.00 mm, each with a resistance of 1.00 V at room temperature. One wire is gold, one is copper and one is aluminum. Refer to the resistivity table (a) How long should each wire be?
- nichrome ribbon resistor elements each has a resistance of 1 ohm. the element is made from sheet of nichrome alloy, 0.025 cm thick. if the width 9f the ribbon is 0.3 cm , what is the length is required per element? assume specific resistance of nichrome alloy to be 10g micro ohm-cmIn the figure the ideal batteries have emfs &₁ = 18.4 V, E2 = 9.96 V, and 3 = 4.70 V, and the resistances are each 2.10 Q. What are the (a) size and (b) direction (left or right) of current i₁? (c) Does battery 1 supply or absorb energy, and (d) what is its power? (e) Does battery 2 supply or absorb energy, and (f) what is its power? (g) Does battery 3 supply or absorb energy, and (h) what is its power? (a) Number i (b) (c) (d) Number (e) (f) Number (g) (h) Number 18, www Units Units Units Units =1&₂ <You want to produce three cylindrical wires with a diameter of 1.00 mm, each with a resistance of 1.00 V at room temperature. One wire is gold, one is copper and one is aluminum. Refer to the resistivity table (a) How long should each wire be? (b) Gold has a density of 1.93 x104 kg / m³. What will be the mass of the gold thread?