Question

sohan is trying to replace 10 cm wire of a heating appliances by 5 cmof another wire of same material.will the appliances give the same amount of heatas earlier.if not what could be the reason?​

Answer 1

Answer:

Explanation:

 In this case, P=\frac{{{V}^{2}}}{R}or P\propto \frac{1}{R}andRwill be minimum, when divided four parts are joints in parallel to the battery.