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Magneic flux linked with a coil is phi=5...

Magneic flux linked with a coil is `phi=5t^(2)+2t+3,` where t is in sec and `phi` is in weber. At time t=1 s, the value of induced emf (in V) is

A

14

B

1.2

C

12

D

6

Text Solution

Verified by Experts

The correct Answer is:
C
Given, magnatic flux, `phi=5t^(2)+2t+3`
The value of induced emf`(dphi)/(dt)=10t+2`
At t=1s,
Value of induced emf `(dphi)/(dt)=12V`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 2
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