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If the flow of electric current is parallel to the magnetic field, the force will be ______(a) Zero(b) Infinity(c) Maximum(d) Half the original valueI have been asked this question in homework.This interesting question is from Magnetic Field in section Electromagnetism of Basic Electrical Engineering |
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Answer» CORRECT choice is (a) ZERO The explanation is: FORCE is a cross product. A cross product involves the sine of the angle between them. If two quantities are parallel to each other, the angle between them is zero. Sin(0) is zero, HENCE force is zero. |
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