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In a magnetic field of 0.05T area of coil changes from 100 cm^{2}   to  101 cm^{2} without changing resistance find out change in flux
Option: 1

5\times 10^{-5}wb


Option: 2

5\times 10^{-6}wb


Option: 3

4\times 10^{-2}wb


Option: 4

4\times 10^{-6}wb


Answers (1)

best_answer

As we learned

Gauss law if surface is open -

\int \underset{B}{\rightarrow}.\underset{dr}{\rightarrow}=\phi _{B}

-

 

 \Phi =\oint B\cdot dr

\Phi_{b} =B\cdot \Delta A

\Phi=0.05(101-100)\times 10^{-4}

\Phi=5\times 10^{-6}wb

 

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Divya Prakash Singh

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