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Q.

Fleming's left-hand and right-hand rules are used in


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a

Generator and electric motor

b

Electric motor and generator

c

Any rule can be used for any device

d

Both are not applied for generators and motors. 

answer is B.

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Detailed Solution

Fleming's left-hand and right-hand rules are used in electric motors and generators.
Fleming's left-hand rule is used in D.C. motors to detect the direction of electrical energy (current). Also, Fleming's right-hand rule is used in a D.C. generator to determine the direction of the magnetic field when the current and the force are known. Thus, electric motors and generators use Fleming's left-hand and right-hand rules.
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