The velocity of electrons with current density 1 unit and a charge density of 4000 nC/m³ is Select one: a. 0.25*106
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- Identify the statement from the following when the inductance can have high value. a. All the given options O b. If the number of turns of the wire is more O c. If the length of the wire is longer O d. If the cross-sectional area is lessA negative charge of -0.0005 C exerts an attractive force of 9.0 N on a second charge that is 10 m. away. What is the magnitude of the second charge?Four point charges are placed at corners of a square . At the top left is a charge of - 1 C, at the top right is a charge of - 2 C, at the bottom right is a charge of -3 Cand at the bottom left is a charge of - 4 C. What is the direction of the net electric force due to the four point charges on a positive charge Q located at the center of square ? O due North O due South O Sw O SE
- 2 Curront is definad as the rate of charge flow. It a charge offo.0065 Golombs passes a given point in a conductor in loo millisesands, Calcutate the? a) current in amperes (Hint: I=) b) Current in milli ampares- a.given Ans: a)o.065 A b) 65 mA1.00 MQ A conducting sphere is charged by an emf source & through a 1.00 MN resistor. When the sphere is fully charged, it has 2 µC charge. The highest current during the charging was I mA. What is the electrical potential energy of the sphere when it is fully chargeď? Give your answer in mJ.A charge of 20 units is placed 5 cm from a like charge of 3 units in mica. The force of repulsion is 0.52 dynes. Find the dielectric constant of mica. Select the correct response: 6.6 O 4.61 2.4 O 1.25
- P1.15. A copper wire has a diameter of 2.05 mm and carries a current of 15 A due solely to clectrons. (These values are common in residential wiring.) Each electron has a charge of -1.60 × 10-19 C. Assume that the free-electron (these are the electrons capable of moving through the copper) concentration in copper is 1029 electrons/m'. Find the average velocity of the electrons in the wire.Solve the following values in figure 1.0. Total Capacitance, Ct. Total Charge, Qt. Individual Charge of C1 Individual Charge of C2 Individual Charge of C3The . capacity of the charge body to do work the . is the .24 * .electrical potential to work the greater is the electrical potential lower, lower lower, greater greater, lower greater, greater none of them O
- 26/a (i) In a 39KV overhead line, there are 3 units in the string of insulators. If the capacitance between each insulator to pin and earth is 20% of self-capacitance of each insulator. Find the distribution of voltage over three insulators and string efficiency25/ Identify the statement from the following when the inductance can have low value. a. If the number of turns of the wire is less b. If the cross-sectional area is lesser c. If the length of the wire is longer d. All the given optionsA string of 4 insulators has self-capacitance equal to 4 times the pin to earthcapacitance. Calculate the voltage distribution across various units as apercentage of total voltage across the string and string efficiency.