It is desried to pass only 5% the current through a galvanometer of resitance 95 ohm. What shunt resistance should be connected across it?

It is desired to pass only 5% of the current through a galvanometer of resistance 95Omega . What shunt resistance should be connected across it ?

A moving coil galvanometer has a resistance of 900 ohm. In order to send only 10% of the main current through this galvanometer, the resistance of the required shunt is

A battery of e.m.f 12 V supplies a current through a oil of resistance 48 ohm. The internal resistance of the battery is 1.2 ohms. A voltmeter of resistance 72 oohm is sued to measure the potential difference across the coil. What value would it show?

A battery of e.m.f. 12 V and internal resistance 5Omega is connected to a resistor. If the current through the circuit is 0.3 A, what is the resistance of the resistor? What is the terminal voltage of the battery, when the circuit is closed?

To increase the current sensitivity of a moving coil galvanometer by 50%, its resistance is increased so that the new resistance becomes twice its initial resistance. By what factor does its voltage sensitivity change?

A galvanometer of 50 ohm resistance has 25 divisions. A current of 4xx10^(-4) ampere gives a deflection of one division. To convert this galvanometer into a voltmeter having a range of 25 volts, it should be connected with a resistance of

A galanometer has a resistance of 10 ohm. It gives maximum deflection for a current of 50 mA. Find the shunt resistance required to convert it into ammeter of range 2.5 A. What is the resistance of ammeter so constructed?

Two cells of e.m.f.6V and 12V and internal resisatnce lohm and 2ohm respectively are connecetd in parallel so as to send current in the same direction through an external resistance of 15ohm. calculate current in each branch of the circuit (c) potential difference across the 15 ohm resistor.