SAT Subject Physics Practice Question 611: Answer and Explanation

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Question: 611

7. This question relates to particles placed in the electric field shown below.

A particle is placed into the electric field (E),which has a magnetic field superimposed on it as shown. Where in the electric field will the three particles named below be located after a short period of time if they start at Point E?

The particle is a proton.

A. A
B. B
C. C
D. D
E. E

Correct Answer: C


The correct answer is (C). The proton moves toward the negative plate of the electric field. When it enters the magnetic field, it is deflected (right-hand rule) toward C.

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