Question

What are the advantages and disadvantages of heating effect of current?

Answer 1

Heating effect of electric current is both a blessing and a curse. 
Advantages of Heating effect of current:
1. The heating effect of electric current is put to good use in room heaters and water heating coils where electricity is converted into heat energy.
2. An electric bulb also exploits the effect. The filament of the bulb is made of Tungsten metal, which glows when heated by the electric current flowing through it, thus giving out light.
3. An electric fuse also uses the heating effect of electric current. A fuse is rated for a specific amperage. When the current through it exceeds its rating, the heat produced melts the fuse wire thus opening the circuit.
Disadvantages of the Heating effect of current:
1. Wastage of energy during power transmission in overhead cables is a major disadvantage of the heating effect. To counter the ohmic losses, electricity is transmitted in a high voltage.
2. The heating effect reduces the life of several components in a circuit.
3. Additional cooling systems and heat sinks need to be added to circuits to counter the effect of heating, which adds to the cost.

Answer 2

The current is very essential part of today's generation.

The current helps in working of all the electrical appliances.
The current had various properties like resistance and others

In this only, there is a property that electric current shows the heating effect.

This effect shows various advantages and disadvantages :-

ADVANTAGES :-

The heating effect of current is useful.
This effect is used in the various types of heating instruments like immersion rods and heaters.

Sometimes this effect helps in preventing the electric shocks.
The heating effect of current helps the fuse to melt and help the circuit to stay safe from the high electric voltage.


DISADVANTAGES :-

The heating effect is sometimes very very harmful.
This heating effect damages various types of machines.
Also,

During the transportation of current from one place to another, the current gets wasted due to its heating effect.
A huge amount of current gets wasted while it's transported through electrical wires.


Thus, it had disadvantages also

The heating effect of current is called as a necessary evil.
As it is important also but created problem also.


Hope this will be helping you