At a particular instant, a proton, far from all other objects, is located at the origin. The proton is traveling with velocity (-3 x 106,0,0)m/s. Consider the electric and magnetic fields at observation point (9 x 10-10,2 x 10-10,0)m caused by this proton. What is the electric field at the observation point?
What is the magnetic field at the observation point?

The electric field at the observation point is

The magnetic field at the observation point is

Explanation:

We are given:

The equation used to calculate the electric field follows:

OR

We know:

So, the equation becomes:

           .....(1)

Putting values in equation 1, we get:

Hence, the electric field at the observation point is

The magnetic field due to moving charge is given by:

OR

             .....(2)

We are given:

Putting values in equation 2, we get:

Hence, the magnetic field at the observation point is

explanation:

newton's third law, for every action there is an equal and opposite reaction.

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