Embibe Experts Solutions for Chapter: Current Electricity, Exercise 1: Exercise

Is internal resistance a drawback of the cell? Does it remain constant?

Does emf of a cell represent a force or potential energy or work done per unit charge? When will it be equal to the PD across the terminals of the cell?

Find the emf of the battery shown in figure.

Calculate the net emf across A and B shown in figure below :

The car-battery is of $12 \mathrm{volt}$. $8$ simple cells connected in series can give $12 \mathrm{volt}$. But such cells are not used in starting a car, why?

Calculate the current drawn from the battery in the given network.

Find the value of resistance $\mathrm{X}$ in the given circuit so that junctions $\mathrm{M}$ and $\mathrm{N}$ are at the same potential.

The adjoining circuit diagram represents balanced Wheatstone’s bridge, calculate $\mathrm{R}$.