A resistor of resistance `20 ohm` is connected across a potential difference of 20 V for one minute. Calculate the heat produced in the resistor.

A current of 5 ampere flows in a 10 ohm resistor. Calculate rate of heat energy produced in the resistor.

A current of 1 A is passed through a resistor of resistance 20 Ohm for 1 minute. Find the heat produced in the resistor.

Two resistors of resistance 2 ohm and 4 ohm when connected to a battery will have

A bulb whose resistance is 10 ohm is connected to a 6 V battery. Calculate the potential difference across the bulb.

A resistance of 20 ohm is connected to a source of alternating current rated 110 V - 50 Hz. Find the maximum instantaneous current in the resistor.

A series circuit contains a resistor of 20Omega , a capacitor and an ammeter of negligible resistance. It is connected to a source of 200 V, 50 Hz. If the reading of ammeter is 2.5 A, calculate the reactance of the capacitor.

Two resistances of 400 ohm and 800 ohm are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000ohm is used to measure the potential difference across 400 ohm. The error in the measurement of potential difference in volt approximately .