What do u mean by shunt? How will u convert galvanometer into ammeter and voltmeter.Find effective resistance in both the conditions.Which one have higher resistance a lower range or a higher range ammeter and why?

1
by hariGupta177

2015-01-08T06:54:18+05:30

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Shunt is the resistance that is connected in a circuit with Galvanometer to change its effective resistance.

Voltmeter -  as voltmeter measures voltage across two points, we need no current to pass in to the voltmeter  (ideally).  So very high resistance R1 is connected in series with the galvanometer.

Ammeter - the galvano meter is connected in series in the circuit - because the ammeter must measure the current in that circuit.  Hence to minimize the change in the current actually flowing, we use very small resistance as the shunt.

shunt resistance S.

Voltmeter --
Actual resistance across two points : R, Voltage V to be measured, current = I.
After connecting,  effective resistance = RS / (R+S)