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According to Flemming’s left hand rule, the middle finger denotes?

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According to Flemming’s left hand rule, the middle finger denotes?

(a) Direction of magnetic field

(b) Direction of current

(c) Direction of force

(d) Direction of force as well as current

The question was posed to me in class test.

My query is from Direction of Magnetic Field in chapter Electromagnetism of Basic Electrical Engineering

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Right answer is (b) Direction of current

The best explanation: According to Flemming’s left hand rule, the index finger denotes the direction of the magnetic field, the thumb denoted the direction of force and the middle finger denoted the direction of the current.

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