A long solenoid has 800 turns uniformly wound over a length of 0.40 m and carries a…

PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current

Problem

A long solenoid has 800 turns uniformly wound over a length of 0.40 m and carries a current of 2.5 A. A straight conductor of length 0.15 m carrying 3 A is placed inside the solenoid perpendicular to its axis so that it experiences the maximum possible force. Calculate the magnitude of this force. (a) 7.5×10−3 N7.5\times10^{-3}\,\text{N} (b) 2.4×10−3 N2.4\times10^{-3}\,\text{N} (c) 2.8×10−3 N2.8\times10^{-3}\,\text{N} (d) 1.1×10−3 N1.1\times10^{-3}\,\text{N}

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