Calculate the total power of `5` fans if each of them draws a current of `0.8 A` at a potential difference of `220 V`.

Calculate the current flowing through a wire of resistance 7.5 Omega connected to a battery of potential difference 1.5. V.

A 110 W, 220 V bulb draws a current

An electric bulb is connected to a 220V power supply line. If the bulb draws a current of 0.5A, calculate the power of the bulb.

A battery is charged at potential of 15 V for 8 h by means of a current of 10A. While discharging it supplies a current 5A for 15h at a potential difference of 14 V. Calculate the watt-hour efficiency of the battery.

A battery is charged at potential of 15 V for 8 h by means of a current of 10A. While discharging it supplies a current 5A for 15h at a potential difference of 14 V. Calculate the watt-hour efficiency of the battery.

A circuit draws a power of 550 watt from a source of 220 volt, 50 Hz . The power factor of the circuit is 0.8 and the current lags in phase behind the potential difference. To make the power factor of the circuit as 1.0, The capacitance should be connected in series with it is

A circuit draws a power of 550 watt from a source of 220 volt, 50 Hz . The power factor of the circuit is 0.8 and the current lags in phase behind the potential difference. To make the power factor of the circuit as 1.0, The capacitance should be connected in series with it is