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A 20 m long potentiometer wire has a res...

A 20 m long potentiometer wire has a resistance of 20 Ohm. It is connected in series with a battery of emf 3V and resistance of `10 Omega`. The internal resistance of cell is negligible. If the lenth can be read accurately up to 1 mm, the potentiometer can read voltage:

A

up to maximum of 0.2 mV

B

with an accuracy of 0.2 mV

C

with an accuracy of 0.1 mV

D

upto maximum of 2V

Text Solution

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The correct Answer is:
C, D
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