Heating Effect in Current Electricity

Electric current

(a) State joule's Law of heating. (b) Name two devies where heating effect of current is utilised. (c) What is the name given to the commercial unit of electircal energy ? Express this unit in joules.

(A) : Working of a moving coil galvanometer is based on heating effect of current. (R) : On heating, the coil starts to rotate in moving coil galvanometer because fo torque.

An alternating current having peak value 14 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is

An alternating current having peak value 14 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is

Name the material used for: Heating element of an electric toaster.

Assertion : A photocell is a technological application of the photoelectric effect. Reason : Photocell is a device whose electric properties are affected by electricity.

Name the following. The branch of physics that deals with the magnetic effect of electric current