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

The reading of ammeter in the adjoining diagram will be

For the same potential difference, a potentiometer wire is replaced by another one of a high specific resistance. The potential gradient then $\left(r=R_h=0\right)$

For changing an galvanometer into a voltmeter, we should connect

In the given circuit, no current is passing through the galvanometer. If the cross-sectional diameter of the wire $AB$ is doubled, then for null point of galvanometer, the value of $AC$ would be:

A galvanometer can be changed into ammeter by connecting:

Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer.

The value of the unknown resistor $R$ is:

To convert a galvanometer into a voltmeter, one should connect a