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Series Combination of Cells

A magnetic fi...

Question

A magnetic field exerts no force on

A

a stream of electrons

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B

a stream on protons

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C

unmagnetised piece of iron

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D

stationary charge.

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Solution

The correct option is D stationary charge.
$F = q (\to v \times \to B)$
if $v = 0 \to F = 0$

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