Heat produced in a wire of resistance $R$ due to current flowing at constant potential difference is proportional to

The emf of a battery is $2\, V$ and its internal resistance is $0.5 \,\Omega$. The maximum power which it can deliver to any external circuit will be ............. $watt$.

The heat produced per unit time,on passing electric current through a conductor at a given temperature,is directly proportional to . . . . . . .

$A$ steady current $I$ flows through a wire of radius $r$,length $L$ and resistivity $\rho$. The current produces heat in the wire. The rate of heat loss in a wire is proportional to its surface area. The steady temperature of the wire is independent of

$A$ time-varying current $i$ is passed through a resistance $R$ as shown in the figure. The total heat generated in the resistance is

Assertion: Long distance power transmission is done at high voltage.
Reason: At high voltage supply,power losses are less.