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  • In a coil of resistance 10 , the induced current developed by changing magnetic flux through it, is shown in figure as a

In a coil of resistance 10 \Omega, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in Weber is :

 

Option: 1

2


Option: 2

4


Option: 3

6


Option: 4

8


Answers (1)

best_answer

  since

\begin{aligned} &I=\left|\frac{1}{R} \frac{d \phi}{d t}\right|\\ &\Rightarrow|d \phi|=|I R d t|\\ &d \phi=(\text {Area of triangle}) \times R\\ &=\left(\frac{1}{2} \times 4 \times 0.1\right) \times 10=2 W b \end{aligned}

 

Hence correct option is 1.

Posted by

Shailly goel

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