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Electromagnetic Induction question

2012 · Q89
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Electromagnetic Induction question

2012 · Q89

NEETPhysicsElectromagnetic InductionMCQ+4 / −1
In a coil of resistance 10 Ω\OmegaΩ, 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

AIPMT 2012 Mains Physics - Electromagnetic Induction Question 20 English
  1. A
    8
  2. B
    2
  3. C
    6
  4. D
    4
View written solutionFree

Correct answer: B

q = Area under i-t graph

= 12×4×0.1{1 \over 2} \times 4 \times 0.121​×4×0.1 = 0.2 C

As q = ΔϕR{{\Delta \phi } \over R}RΔϕ​

⇒\Rightarrow⇒ \Delta $$\phi = qR = 0.2×\times×10 = 2 weber

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