Part-I: Answer the following 12 multiple choice questions: a2x5 60 pts) The forc

Question

Part-I: Answer the following 12 multiple choice questions: a2x5 60 pts) The force on a charged particle created by its motion in a magnetic field is zero at what angle between the velocity and field? zero b, 60 c. 900 d. 450 Ans. 2. The right-hand rule allows one to property of the interaction of a magnetic field with a charged find a particle. The right-hand rule applied to moving charges: a. results in positive charges moving clockwise. b. results in negative charges moving clockwise. c. can be used for positive charges only d. gives the direction of the force on a charge moving in a magnetic field. Ans. 3. The force exerted on a current-carrying wire located in an external magnetic field is directly proport to which of the following a. current strength b. field strength c, both A and B d. None of the above are valid. Ans. Different units can be used to measure the same physical quantity, differing only by some multiplica factor. The cgs unit for magnetic field, the tesla, is equal to gauss. b, 10- c. 0.5 physical quantity. d. These units do not measure the same Ans.

Explanation / Answer

1) c) 90 deg

F = q v B sin theta

Force is maximum when sin theta is maximum

sin 90 = 1

2) d) gives the direction of the force on charge moving in magnetic field

3) C) A and B correct

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