The power rating of an electric motor that draws a current of `3.75 A`, when operated at `200 V`, is nearly

The resistance of the armature of an electric motor is 55 ohm. The motor draw a current of 2 A when running at 220 V. What is the back e.m.f ?

Looms operated by the electric motors

When an electric lamp is connected to 12V battery, it draws a current of 0.5A. The power of the lamp is:

An electric oven of 2 kW power rating is operated in a domestic electric circuit [220V] that has a current rating of 5 A. What result do you expect ? Explain.