List of top Physics Questions on Electric Power asked in KEAM

If three tube lights with power 10 W, 25 W and 50 W are connected in parallel to a source voltage V, then the effective power of the combination is

When an electric potential of 200 V is maintained between the ends of a conductor, a current of 3 A flows through it. The amount of heat energy dissipated in the time interval 25 s is

A constant current of 3A flows through a conductor having potential difference of 200V. Find heat developed in conductor in 25s.

The resistor \( R_1 = 30 \, \Omega \) and \( R_2 = 10 \, \Omega \) are connected in parallel to a 20 V battery. Find the heat developed in the resistor \( R_1 \) in one minute

The energy dissipated per unit time by a wire of resistance \(2R\) connected to a battery of voltage \(2V\) is

If an electric bulb of resistance \(400 \Omega\) is connected to an ac source of peak voltage 282.8 V, then the electric power of the bulb is

In a common emitter amplifier, the input resistance and output resistance are \(200\ \Omega\) and \(50\ \text{k}\Omega\) respectively. If the voltage gain of the amplifier is \(50\), then the power gain is

The resistance of the tungsten wire in the light bulb, which is rated at $120$ V/$75$ W and powered by a $120$ V direct-current supply, is

Two bulbs of equal power are connected in parallel and they totally consume 110 W at 220 V. The resistance of each bulb is

The power dissipated in the transmission cables carrying current I and voltage V is inversely proportional to

The power dissipated in the transmission cables carrying current I and voltage V is inversely proportional to

The power dissipated in the transmission cables carrying current I and voltage V is inversely proportional to