Acceleration by Magnetic Field and Electric Field of Current Carrying Wire – Rankers Physics

Force Acting on Moving Charges: Practice Problem & Solution

Assertion (A): A magnetic field can accelerate a charge particle. Reason (R): A steady current carrying wire does not generate an electric field outside it. In the light of the above statements, choose the correct answer from the options given below.
Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are false

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Force Acting on Moving Charges. Understanding the underlying formula is key to arriving at the correct answer below:

A magnetic field exerts a force perpendicular to velocity, changing its direction, hence accelerating the particle. Outside a steady current-carrying wire, there is no net charge, so the electric field is zero. Both statements are true, but they are unrelated.

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