Question

how does the heat h produced by a current passing through a fixed resistance wire depend on the magnitude of a current I

Answer 1

Resistance oppose motion of current if we increase resistance then current eill decrease and vice verss
Hope u understand

Answer 2

Explanation:

• The heating effect of current through a fixed resistance is given by formula $\mathrm{I}^{2} \mathrm{RT}$ where I is the current, R is the fixed resistance and T is the time for which the current has been flowing.

• The above three factors are responsible for the heat that is produced due to flow of current.
• Resistance is the hindrance or reluctance that, a conductor or the material through which current is flowing, has to offer.
• This hindrance or resistance in path of current produces heat as byproduct thus more the current more is the heat.