Question

A coil of 100 turns and 5 square centimeter is placed in a magnetic field B = 0.2 T. The normal to the plane of the coil makes an angle of 60 with the direction of the magnetic field. The magnetic flux linked with the coil is :

• A. 5 x ${10}^{-3}$ Wb
• B. 5 x ${10}^{-5}$ Wb
• C. ${10}^{-2}$ Wb
• D. ${10}^{-4}$ Wb

Answer 1

The correct option is A 5 x ${10}^{-3}$ Wb

[A] Magnetic Flux = NBA $\cos \alpha$

$\begin{array}{c}\Rightarrow 0.2\times 100\times 5\times {10}^{-4}\times \frac{1}{2}\\ \Rightarrow 5\times {10}^{-3}Wb\end{array}$