Electromagnetism

A. B = μNI
B. B = μN/I
C. B = μnI
D. Both B and C

A. 4πx10-9 WbA-1m-1
B. 4πx10-7 WbA-1m-1
C. 4πx10-10 WbA-1m-1
D. 4πx10-8 WbA-1m-1

A. a circle
B. a spiral
C. an ellipse
D. helix

A. magnetic flux = flux density / area
B. magnetic flux = flux density x area
C. flux density = magnetic flux area
D. flux density = magnetic flux x area

A. τ = NIAB cosφ
B. τ = NIAB sinφ
C. τ = NIAB tanφ
D. τ = NIAB

A. charge in motion
B. charge at rest
C. both
D. none

A. R=qB/mV
B. R=mV/qB
C. R=qmV/B
D. R=qmB/V

A. F=1/B
B. F=1/Bsinθ
C. F/0
D. F=1/Bcosθ

A. be rotating
B. come to rest in N-S direction
C. vibrating like galvanometer needle
D. comes to rest after rotation

A. independent mass m
B. directly proportional to m
C. directly proportional to q
D. directly proportional to B