A. use a very long and fine suspension
B. use a coil of very large area
C. use a coil with very large number of turns
D. use a very strong magnetic field
A. in series with the circuit
B. in parallel with circuit
C. in series with any of the parallel resistances in the circuit
D. in parallel with any of the series resistances in the circuit
A. a most sensitive galvanometer is used
B. a steady voltage cell is used
C. the balance point is close to the middle of the wire
D. a high resistance box is used in one of its gap
A. 0.1 A
B. 1:00 AM
C. current sensitivity
D. 1 m A
A. C/BAN
B. CAN/B
C. BAN/C
D. ABC/N
A. 18Ω
B. 30Ω
C. 24Ω
D. 12Ω
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