A) Right hand thumb rule is used to find the direction of magnetic field in a coil of wire and the electric current in a straight conductor.
B) Fleming's left hand rule is used to find the direction of force exerted on a current carrying conductor in a magnetic field as in electric motor.
C) Fleming's right hand rule is used to find the direction of induced current in a closed circuit in changing magnetic field as in electric generator.
D) All of these
E) None of these
Correct Answer: D
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