Chapter 26, Problem 61A

To determine

To Complete: The problem using concept of electric and magnetic fields.

Explanation of Solution

Introduction:

When a charged particle is put in electric field, it experiences an electric force. When a charged particle moves in a magnetic field, it experiences a magnetic force and moves in a circular path.

The complete problem can be:

A proton has a velocity of $3.7\times {10}^6\text{m/s}$ east and is subjected to electric field $130\text{kV/m}$ north. Find the magnitude and direction of magnetic field for which the proton goes undeflected.