Some equipotential surfaces of magnetic scalar potential are shown in figure. Magnetic field at a po

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5.Magnetism and Matter

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Some equipotential surfaces of the magnetic scalar potential are shown in the figure. Magnetic field at a point in the region is

A

${10^{ - 4}}\,T$

B

$2 \times {10^{ - 4}}\,T$

C

$0.5 \times {10^{ - 4}}\,T$

D

None of these

Solution

(b)$|B|\, = \frac{{\Delta V}}{{\Delta x}} = \frac{{0.1 \times {{10}^{ – 4}}}}{{0.1\;\sin {{30}^o}}} = 2 \times {10^{ – 4}}\,T$

Standard 12

Physics

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