Question

State Jule's law of heating effects its mathematical form. What is the use of fuse which work on the principle of joules law of heating effect? How the fuse m placed with electric appliances in electric circuit​

Answer 1

Answer:

When an electric current passes through a conductor for some time, the conductor gets heated up. Thus heating of a conductor due to the flow of electric current through it is known as Joule's law of heating.

Heat generated H=i

2

Rt

where i is the amount of current flowing though the conductor, R is the resistance of conductor and t is the time for which the current has flown.

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Answer 2

Answer:

The mathematical form of Joule's law is H = I²Rt.

Explanation:

Joule's law explains the heat produced when current is passed through a particular conductor. By the law, the heat generated will be directly proportional to the product of the square of the current (I) passing through the conductor, resistance (R) of the conductor, and the time of flow (t) of current through the conductor.

Mathematically, H = I²Rt

A safety fuse is a safety device that works on the principle of the heating effect of current. When the current through the circuit increases the heat produced will be square times the current. The safety fuse will be a material of low melting point. When more current passes through it heat will be increased and the fuse wire will melt. This will break the circuit and will protect the components in the circuit.

The fuse should always be placed in a series connection in an electrical circuit.