Answer to Question #61352 in Electricity and Magnetism for muhammad umar

Question

9) One end of a simple rectangular wire-loop current balance is inserted into a solenoid. A force of
3.0×10−3
N is found to act on this end when a current of 2.0A is flowing in it. If the length of the conductor forming the end of the the wire-loop is 0.
a) 0.043T
b) 0.26T
c) 0.43T
d) 0.015T

10) A staight wire 1.0m long carries a currernt of 100A at right-angles to a uniform magnetic field of 1.0T. Find the mechanical force on the wire and the power required to move it at 15m/s in a plane at right-angles to the field.
a) 100N and 1.5kW
b) 200N and 2.5kW
c) 300N and 1.4kW
d) 200N and 2.7kW