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A proton moves at a constant velocity of...

A proton moves at a constant velocity of `50 m/s` along the x-axis, in uniform electric and magnetic fields. The magnetic field is `B = (2.0 mT)hatj`. What is the electric field?

Text Solution

Verified by Experts

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