It is required to measure the resistance of a circuit operating at `120 V`. There is only one galvanometer of current sensitivity `10^(-6)` A per division. How should the galvanometer be connected in the circuit to operate an ohmmeter? Why minimum resistance can be measured with such a galvanometer if its full-scale has `40` divisions?

It is required to measure the resistance ofa circuit operating at 120V. There is only one galvanometer of current sensitivity 10^(-6) A per division. How should the galvanometer be connected in the circuit to operate as an ohmmeter? What minimum resistance can be measured with such a galvanometer if its full scale has 40 division? Construct the entire scale of such an ohmmeter in ohms per 5 division? Neglect galvanometer resistance.

If the galvanometer current is 10 mA, resistance of the galvanometer is 40 Omega and shunt of 2 Omega is connected to the galvanometer, the maximum current which can be measured by this ammeter is

If the galvanometer current is 10 mA, resistance of the galvanometer is 40 Omega and shunt of 2 Omega is connected to the galvanometer, the maximum current which can be measured by this ammeter is

A galvanometer of resistance 100 Omega gives the full scale deflection for a current of 10 m A. If a resistance of 1 Omega is connected in parallel to the coil of the galvanometer , then maximum current that can be measured with the galvanometer will be

A galvanometer having 30 divisions has current sensitivity of 20 mu A//"division" . Find the maximum current it can measure.

A galvanometer having 30 divisions has current sensitivity of 20 mu A//"division" . Find the maximum current it can measure.

A galvanometer having 30 divisions has current sensitivity of 20 mu A//"division" . Find the maximum current it can measure.

The scale of galvanometer is divided into 150 equal divisions. The galvanometer has a current sensitivity of 10"divisions"//mA and the voltage sensitivity of 2"divisions"//mV . How the galvanometer be designed to read (i) 6A per division and