The current through a 120 mH coil is changing at a rate of 150 mA/s. T – McqOptions

MCQOPTIONS

1.	The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
A.	1.8 mV
B.	18 mV
C.	180 mV
D.	1.25 mV
Answer» C. 180 mV

Discussion

No Comment Found

Related MCQs

What is the phase angle between the source voltage and current, when a 100 mH inductor with a reactance of 6 k , and a 1 k resistor are in series with a source?
What is the phase angle of a 24 V ac parallel RL circuit when R = 45 ohms and X L = 1100 ohms?
What is the impedance of a 1 kHz series RL circuit when R and X L are both 1000 ohms?
What is the current rise after 2 time constants if V s = 12 V dc, R = 60 , and the inductor is rated at 24 mH?
Find I R and I L .
With 100 V ac applied to the primary of a transformer so that it draws 500 mA, what will be the 300 V ac secondary current?
If 360 V ac is the output of a 300-turn secondary winding, what is the input voltage when the primary winding has 150 turns?
Find V R and V L .
What is the number of turns required in the secondary winding for a transformer when 120 volts is applied to a 2400-turn primary to produce 7.5 V ac at the secondary?
An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is