Question 193 of 276
The magnetic field existing in a region is given by . A square loop of edge carrying 0.5 A current is placed in plane with its edges parallel to the axes, as shown in figure. The magnitude of the net magnetic force experienced by the loop is_____ .
Show answer and solution
Answer: 50
Force on segment parallel to -axis will cancel each other. Hence will be due to portion parallel to -axis.
$\begin{aligned}
& F=0.5 \times 0.5 \times 6 \times 0.2-0.5 \times 0.5 \times 0.2 \times 5 \\
& =0.5 \times 0.5 \times 0.2 \\
& =0.25 \times 0.2 \\
& =50 \times 10^{-3} \mathrm{~N} \\
& =50 \mathrm{mN}
\end{aligned}$
$\begin{aligned}
& F=0.5 \times 0.5 \times 6 \times 0.2-0.5 \times 0.5 \times 0.2 \times 5 \\
& =0.5 \times 0.5 \times 0.2 \\
& =0.25 \times 0.2 \\
& =50 \times 10^{-3} \mathrm{~N} \\
& =50 \mathrm{mN}
\end{aligned}$
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