A coil having a resistance of 8 Ω and inductance of 2 H is switched a – McqOptions

MCQOPTIONS

1.	A coil having a resistance of 8 Ω and inductance of 2 H is switched across a 48 V DC supply. The time constant of the circuit and the final value of the current in the circuit, respectively are:
A.	0.4 and 24 A
B.	0.2 and 4.8 A
C.	0.25 and 8 A
D.	0.25 and 6 A
Answer» E.

Discussion

No Comment Found

Related MCQs

A 10-μF capacitor in series with a 1-MΩ resistor is connected across a 100-V DC supply. The time constant of the circuit is ___________.
In the figure given below, the initial capacitor voltage is zero. Then after the switch is closed at t = 0, Calculate the final steady-state voltage across the capacitor:
In the circuit shown below, the switch is closed at t = 0. The value of θ in degrees which will give the maximum value of DC offset of the current at the time of switching is
For the given circuit, the switch remains closed for a long time and opens at t = 0 seconds. Assuming the ideal model for every device, find the steady-state magnitude of the voltage at the capacitor.
In the circuit shown, the voltage source 4V has been applied for a long time before the switch opens at t = 0, the current Ir(0+) is
In the circuit shown, the initial current I0 through the inductor is given in the figure. The initial value of the voltage across the inductor V0(0+) is
A 20-mF capacitor is in series with a 150-ohm resistor. The combination is placed across a 40-V DC source. The time constant of the circuit is ________.
In the given circuit, find the current I in the 3-kΩ resistor at time t = 2 sec.
An 18 μF capacitor holding charge of Q coulomb is connected to the circuit at time t = 0 sec.The time at which the capacitor will be discharged to approximately Q/2.72 Coulombs will be:
During charging of the capacitor, the current actually drops to _________ percent of its initial maximum value.