A Proton with a Charge +E Is Moving with a Speed

question 4

Multiple Choice

A proton with a charge +e is moving with a speed v at 50º to the direction of a magnetic field .The component of the resulting force on the proton in the direction of is

• A)evB sin 50º cos 50º
• B)evB cos 50º
• C)zero
• D)evB sin 50º
• E)None of these is correct.

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