In older television sets, a beam of electrons moves from the back of the picture

Question

In older television sets, a beam of electrons moves from the back of the picture tube to the screen, where it strikes a fluorescent dot that glows with a particular color when hit. Earth's magnetic field at the location of the television set is horizontal and toward the north. In which direction(s) should the set be oriented so that the beam undergoes the largest deflection? (Assume that the effect of gravity is negligible. Select all that apply.)

The television set should be westward.
The television set should be northward.
The television set should be southward.
The television set should be eastward.

Please Help, thank you

Explanation / Answer

For the beam undergoes the largest deflection , the television set should be westward or eastward. Therefore, the correct answer is option-1) the television set should be westward, and option-4) the telivision set should be eastward.

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