Electric power consumed by resistor | Electric power supplied/consumed by cell| KCL and KVL | EMF and internal resistance of a cell

Electric power consumed by resistor | Electric power supplied and consumed by cell | KCL & KVL

The emf of a cell having internal resistance is

Assertion:- Average power consumed in an accircuit is equal to average power consumed by resistors in the circuit. Reason:- Average power consumed by capacitor and inductor in zero.

A cell of constant emf first connected to a resistance R_(1) and then connected to resistance R_(2) . If power deliverd in both cases is same, then the internal resistance of the cell is

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be

What is the maximum power output than can be obtained from a cell of emf E and internal resistance r?

A cell of constant e.m.f. first connected to a resistance R_(1) and then connected to a resistance R_(2) . If power delivered in both cases is then the internal resistance o f the cell is

In the circuit shown in figure find a. The power supplied by 10 V battery b. The power consumed by 4 V battery and c. The power dissipated in 3Omega resistance.

Statement I: When an external resistor of resistance R (connected across a cell to internal resistance r ) is varied, power consumed by resistance R is maximum when R = r. Statement II: Power consumed by a resistor of constant resistance R is maximum when current through it is maximum.