Question

A coil of surface area $100{cm}^2$ having $50$ turns is held perpendiculars to the magnetic field intensity $0.02Wb{m}^{-2}$. The resistance of the coil is $2\Omega$. If it is removed from the magnetic field in $1s$, the induced charge in the coil is ______

• A. $5C$
• B. $0.5C$
• C. $0.05C$
• D. $0.005C$

Answer 1

The correct option is C $0.05C$

$\begin{array}{c}\Delta \varphi =\frac{100}{10000}\times 50\times 0.02\\ =\frac{10}{1000}=\frac{1}{100}\\ \Delta Q=\frac{\Delta \varphi }{R}\\ =\frac{1}{100\times }=0.05C\\ Hence,\\ optionCiscorrectanswer.\end{array}$