An electric field of 1.32 kV/m and a magnetic field of 0.516 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed?

The speed of the electron is .

Explanation:

Given that,

The magnitude of electric field,

The magnitude of magnetic field, B = 0.516 T

Both the magnetic and electric fields are acting on the moving electron. Then,  the magnitude of electric field and magnetic field is balanced such that :

or

So, the speed of the electron is . Hence, this is the required solution.

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