A.
A galvanometer can be converted to an ammeter with a different range by connecting a high resistance in series
B.
An electric current always produces a magnetic field
C.
Maxwell's screw rule states that if a corkscrew moves inthe direction of the current, the hand turns in the direction of the lines of force
D.
Electromagnets are used in electric bells and telephone recievers
E.
The lines of force round a straight current carrying conductor are circular
Correct Answer: Option A
Explanation
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