A proton traveling horizontally due east enters a region that contains both a uniform magnetic field and a uniform electric field. (Let’s ignore the earth’s magnetic field and assume that the uniform magnetic field is provided by a strong magnet.) The electric field points horizontally due north. It is observed that the proton continues to travel in a straights line towards the east. Using the right hand rule, In what direction must the magnetic field point? Explain.

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.