An alternating current of the r.m.s value of 4.0 A and frequency 50Hz flows in a circuit containing a 10Ω resistor. The peak current is then ?
The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?
If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?
Waves emitted from the antenna are__________________?
An electromagnetic wave consists of _____________________?
Electromagnetic waves travel in free space with the speed of___________________?
An alternating current or voltage_____________________?
A moving coil galvanometer of resistance 100? gives half scale deflection for a current of 20mA. What will be the potential difference across it ?
If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?
A 100µF capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about______________?
