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Fleming's Left Hand Rule

A very long s...

Question

A very long straight wire carries a current $I$ . At the instant when a charge $+ Q$ at point $P$ has velocity $\to v$ , as shown in figure, the force on charge is

A

along OY

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B

opposite to OY

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C

along OX

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D

opposite to OX

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Solution

The correct option is A along OY
The magnetic field at $P$ is inwards due to a straight long conductor. Fleming's left hand rule gives the direction along $o y$ .

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