State Faraday’s law of electromagnetic induction in its integral form.
Answer
∮ E·dl = −d/dt ∫ B·dA
The correct answer is ∮ E·dl = −d/dt ∫ B·dA — Expressed mathematically: (displaystyle oint E,dl = -\frac{d}{dt}int B,dA.
Step-by-step solution
- Recall the statement of Faraday’s law.
- Write the integral form: the line integral of the induced electric field around a closed loop equals the negative rate of change of magnetic flux through that loop.
- Expressed mathematically: (displaystyle oint E,dl = -\frac{d}{dt}int B,dA.
Common mistake: Omitting the negative sign
Concept tested: Faraday’s law statement
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