1. The magnitude of magnetic field is equal to [BLANK] across an area at right a

Question

1. The magnitude of magnetic field is equal to [BLANK] across an area at right angles to the magnetic field
A. flux
B. flux per unit area
C. flux times charge
D. flux per unit velocity

2. A velocity selector for charged particles uses:
A. perpendicular electric and magnetic fields to produce electric and magnetic forces that point in opposite directions.
B.parallel electric and magnetic fields to produce electric and magnetic forces that point in the same direction.
C.perpendicular electric and magnetic fields to produce electric and magnetic forces that point in the same direction.
D.parallel electric and magnetic fields to produce electric and magnetic forces that point in opposite directions.

Explanation / Answer

A.Flux = B.dA B ANS

B.A

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