Question

what are the advantages of heating effect of electric current?​

Answer 1

Answer:

the advantage of heating effect of current is heaters like water heater , room heaters etc; but in electrical system ,heating effect of current increases the resistance thus resulting in increase in voltage drop, increased loss of power etc., thus reducing the efficiency of the rotary equipments

Answer 2

Now in our day to day life we have observed that the electrical appliances after continuous operation become hot. Hence, it is important to understand the reason for the heating of electrical appliances hot after continuous operation.

The reason behind the same can be explained on the basis of a very important law and that law is known as joule law. Joule law describes that the heat produced is directly proportional to square of current, resistance and is also directly proportional to the time. If H is the heat produced, I is the electric current, R is the resistance and t is the time taken, then the joule law can be expressed as follows

H is directly proportional to I ^2 * R * t.