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Some magnetic flux is changed from a coi...

Some magnetic flux is changed from a coil of resitance `10 Omega`. As a result, an induced current is developed it, which varies with time as shown in Fig. 3.213. Find the magnitude of the change in flux through ythe coil in weber.

A

`2`

B

`4`

C

`6`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
`|dq|=(dphi)/(R )=I dt=`area under `i-t` graph
:. `dphi=`(Area under `i-t` graph )`R`
`=(1)/(2)xx4xx0.1xx(10)=(2)Wb`.
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