A heater coil bearing a label 920 W 230 V is connected in a 230 V supply
Find out the current flowing through the heater.

A 100 W bulb is connected to an AC source of 220 V, 50 HZ . Then the current flowing through the bulb is

A bulb is marked 220 V and 40 W. Calculate the current flowing through the bulb and its resistance.

Three similar cells, each of emf 2 V and internal resistance r Omega send the same current through an external resistance of 2 Omega when connected in series or in parallel. The strength of the current flowing through the external resistance is (A)

An elastic heater of resistance 115ohm is made to work on 230 V supply What will be the current through this heater while it is working.

In a circuit if two resistors of 4 Omega and 8 Omega are connected in parallel, find out the ratio of current passing through the two resistors.

The resistance of the armature of a dc motor is 50 Omega . A power supply of 200 V is connected across it and the current through the armature is 2A. What is back emf ?

Two resistors of resistances 2 Omega and 6 Omega are connected in parallel. This combination is then connected to a battery of emf 2 V and internal resistance 0.5 Omega . What is the current flowing through the battery ?

A 100Omega resistor is connected to a 220 V, 50 Hz ac supply What is the rms value of the current in the circuit?