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
A. maximum current flows through the galvanometer branch
B. minimum current flows through the galvanometer branch
C. potential difference across galvanometer branch is maximum
D. potential difference across galvanometer branch is zero
A. detect current in a circuit
B. measure current flowing through a circuit
C. measure voltage across a circuit
D. measure potential difference between two points in a circuit
A. BINA cosa
B. BINA sina
C. BINA tana
D. BINA
A. 2.0 mA
B. 20 mA
C. 200 mA
D. 0.2 mA