One end of a simple rectangular wire-loop current balance is inserted into a solenoid. A force of 3.0 x 10^-3N 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 wire -loop is 0.10m. what is the magnetic flux density in the solenoid?
a) 0.043T
b) 0.26T
c) 0.43T
d) 0.015T
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