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A charged particle moves along positive ...

A charged particle moves along positive y-axis with constant velocity in uniform electric and magnetic fields. Ilf magnetic fiedl is actig along positive x-axis, then, electric field should act along positive z-axis.
Reason: To keep the charged particle undeviated the relation `E=Bxxv` must hold good.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
`:' F_e+F_m=0`
`:.qE+q(vxxB)=0`
`:. E=-(vxxB)=(Bxxv)`
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