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