A vernier callipers has divisions on the vernier scale which coincide with divisions on the main scale. The least count of the instrument is `0.1mm`. The main scale divisions are of
A
no force will be exerted on it
B
it will move towards A
C
it will move towards C
D
it will move towards E
Text Solution
Verified by Experts
The correct Answer is:
B
Positive charge has a tendency to move from higher potential to lower potential hence it will move from `B (-20 V)` to `A(-30V)`.
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