An electron in potentiometer wire experiences a force 
. The length of potentiometer wire is 
. The e.m.f. of the battery connected across the wire is (electronic charge 
)
A
6 V
B
9 V
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Force on an electron, 
Electric field,
Potential difference across the wire is
Emf of the battery 
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