A current-carrying 2.0-cm long segment of wire is inside a long solenoid (radius = 4.0 cm, n = 800 turns/m, current = 50 mA). The wire segment is oriented perpendicularly to the axis of the solenoid. If the current in the wire segment is 12 A, what is the magnitude of the magnetic force on this segment?
A. 22 ?N
B. 16 ?N
C. 18 ?N
D. 12 ?N
E. 0 ?N
Answer: D
You might also like to view...
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is
a. 2,000 J. b. 4,000 J. c. 20,000 J. d. 40,000 J. e. 334,000 J.
Where does a 1 solar-mass protostar appear on an H-R diagram?
A) It is to the right of the main sequence and higher up than the Sun. B) It is to the right of the main sequence and lower down than the Sun. C) It is to the left of the main sequence and higher up than the Sun. D) Nowhere; only stars that have fusion in their cores can be shown on H-R diagrams.
The iron nucleus has the greatest binding energy of any nucleus
A) True B) False
Object A in the shape of a disk of radius r is placed a distance R away from an intense light source. Object B, made from the same material as object A, is in the shape of a disk of radius 2r and placed a distance 2R away from the same light source
We observe which of the following? A) Both objects experience the same amount of radiation pressure but receive different amounts of linear momentum. B) The objects experience different amounts of radiation pressure and receive different amounts of linear momentum. C) Both objects experience the same amount of radiation pressure and the same amount of linear momentum. D) The objects experience different amounts of radiation pressure but receive the same amount of linear momentum.