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A galvanometer can be converted into an ...

A galvanometer can be converted into an ammeter by connecting

A

introducing a shunt resistance of large value in series.

B

introducing a shunt resistance of small value in parallel.

C

introducing a resistance of small value in series.

D

introducing a resistance of large value in parallel.

Text Solution

Verified by Experts

The correct Answer is:
B
To utilise a galvanometer (G) as ammeter, there is the difficulty in measurnment of current due to the sensitivity of galvanometer and also connection of galvanometer with a very large resistance in series that may change the value of current in the circuit. To overcome these difficulties one attaches a small resistance `r_(s)` called shunt resistance in parallel with the galvanometer coil as shown in the figure.
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