Calculate L for the coil if the induced emf is measured to be 2 V for a coil with nod tune when the current change within 0.1 s from zero to 5 A. a. 400 b. 200 H -2x10-H
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- A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?Due to mutual inductance between two coils, there is an induced emf in one coil due to a change in current in the other coil. O True O False O Hard to sayAn e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be (a) 64 A/s (b) 32 A/s (c) 16 A/s (d) 4 A/s
- Calculate the inductance for a coil with 120 turns, a current of 0.47 mA, and a flux of 1.2x10Wb. a S w R lillA resistor R and a capacitor C are connected in series across a 400 V variable ac supply. When the frequency is 40 Hz, it draws 10 A current, and when the frequency is 50 Hz, it draws 15 A current. Find R and C.For the series RL circuit shown in the figure below, answer the following questions and justify your answer.If the current is kept constant, does the coil have inductance?If the current is kept constant, does the coil affect the current value?Can the reverse emf ever be greater than the battery emf?
- Determine the loop currents Ia, I,, and Ic. 100 Ic 100 100 100 100 Ib 55V 100 V laThere is 50 mA of current through a coil with 250 turns. The flux is 150 µWb. What is the mmf? What is the reluctance of the circuit? A. Fm = 1.25 At - R=4.3x10-3 At/Wb B. Fm = 2.25 At - R=8.3x10-3 At/Wb C. Fm = 1.25 At - R=8.3x10-3 At/Wb D. Fm = 1.25 At - R=8.3x10-2 At/WbCalculate the inductance for a coil with 120 turns, a current of 0.47 mA, and a flux of 1.2x10 Wb. b H a S ww R
- Please answer the problem below. Give the waveform for the current of a 10-mH coil if the voltage acrossthe coil follows the pattern of the figure below if t = 0s and the curren IL = 4 mAThree coils each having resistance of 12 Q are connected in star across 413 V, 50 Hz supply. Then the total power consumed is OSs O 715.36 W O 1184.58 W O 8206.75 W O 14214.08 Wassume that the voltage drop across the resistor ER is 78 v the voltage drop across the capacitor EC is 104 v and the circuit has a total impedance z of 20 ohms the frequency of the ac voltage is 60 hz find the missing values. fine the missing vaules