Crompton potentiometer has
A. 14 coils and a slide wire all having the same resistance
B. 14 coils and a slide wire but the resistance of slide wire is half that of each coil
C. 14 coils each of different resistance
D. 14 coils out of which 7 coils have resistance which is twice that of remaining 7 coils
Show Answer
Answer: A
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