B M Sharma Solutions for Chapter: Electrical Measuring Instruments, Exercise 1: DPP

$50 \mathrm{\Omega }$ and $100 \mathrm{\Omega }$ resistors are connected in series. This connection is connected with a battery of $2.4 \mathrm{V}$. When a voltmeter of $100 \mathrm{\Omega }$ resistance is connected across $100 \mathrm{\Omega }$ resistor, then the reading of the voltmeter will be

An ammeter gives a full-scale deflection when a current of $1.0 \mathrm{A}$ is passed in it. To convert it into a $10 \mathrm{A}$ range ammeter, the ratio of its resistance and the shunt resistance will be

$100 \mathrm{mA}$ current gives a full-scale deflection in a galvanometer of $2 \mathrm{\Omega }$ resistance. The resistance connected with the galvanometer to convert it into a voltmeter to measure $5 \mathrm{V}$ is

When a $12 \mathrm{\Omega }$ resistor is connected with a moving coil galvanometer, then its deflection reduces from $50$ divisions to $10$ divisions. The resistance of the galvanometer is

A voltmeter has a range $0-V$ with a series resistance $R$. With a series resistance $2R$, the range is $0-V^{\mathit{\text{'}}}$. The correct relation between $V$ and $V^{\mathit{\text{'}}}$ is

A moving coil galvanometer is converted into an ammeter reading up to $0.03 \mathrm{A}$, by connecting a shunt of resistance $4r$ across it, and into an ammeter reading up to $0.06 \mathrm{A}$, when a shunt of resistance $r$ is connected across it. What is the maximum current which can be sent through this galvanometer, if no shunt is used?

In the circuit shown, the galvanometer shows zero current. The value of resistance $R$ is

Whether the switch $K$ is open or closed, the reading of galvanometer is the same. If $I$ denotes the current in respective resistance, then