Current Electricity: End Error in Metre Bridge MCQ

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End Error in Metre BridgeHardQuestion 31668

Question

End error in a metre bridge arises due to:

A
Incorrect resistance in gap
B
Non-uniformity of wire and contact resistance at ends
Correct
C
Galvanometer resistance
D
Ohm's law violation

Correct answer

Non-uniformity of wire and contact resistance at ends

Explanation

The wire may not have perfectly uniform resistance per unit length, and contact resistance at the ends introduces error. End corrections are applied to get accurate results.

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