Subject - Physics:

Basics

MCQ - 28-10495

Question:

An electron moves due North in a horizontal plane with uniform speed. It enters a uniform magnetic field directed due South in the same plane. Which one of the following statements concerning the motion of the electron in the magnetic field is correct?

It continues to move North with its original speed.
It slows down to zero speed and then accelerates due South.
It is accelerated due West.
It slows down to zero speed and then accelerates due South.

Correct Answer: C

Explanation:

Charges in a magnetic field experience forces according to the Left Hand Rule. If they move exactly parallel to a field they experience no force. Had the field been an electric field directed south, the electron would have experienced an accelerating force.

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346 MCQ for effective preparation of the test of Basics of Physics section.

Read the MCQ statement: An electron moves due North in a horizontal plane with uniform speed. It enters a uniform magnetic field directed due South in the same plane. Which o .... field is correct? , keenly and apply the method you have learn through the video lessons for Basics to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 28-10495.

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Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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