Question

Name the factor responsible for the ammont of heat prodused in a wire ​

Answer 1

When current is passed in a wire,the heat produced in it depends on the three factors; i) on the amount of current passing through the wire. (ii) on the resistance of wire and (iii) on the time for which current is passed in the wire.

i) Dependence of heat produced on the current in wire: The amount of heat H produced in the wire is directly proportional to the square of current I passing through the wire, i.e. H∝I

2

ii) Dependence of heat produced on the resistance of wire: The amount of heat H produced in the wire is directly proportional to the resistance R of the wire , i.e.,H∝R

iii) Dependence of heat produced on the time: The amount of heat H produced in the wire is directly proportional to the time t for which current is passed in the wire , i.e.H∝t

Answer 2

Explanation:

The factors are: Length,thickness and nature of material. 1-With increase in length of conductor,increases the amount of heat produced. 2-With increase in thickness ,less amount of heat is produced.