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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACFaraday law/Lenz lawEasy2 minPYQ_2011

PhysicsEasysingle choice

Ina magnetic field of $0.05 T$ , area of a coil changes from $101 cm^{2}$ to $100 cm^{2}$ without changing the resistance which is $2Ω$ . The amount of charge that flow during this period is

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Answer:

Solution:

Magnetic Flux, $ϕ = B \cdot A$ Change in flux, $d ϕ = B \cdot d A$ $= 0.05 (101 - 100) \times 1 0^{- 4}$ $= 5 \times 1 0^{- 6} Wb$ Charge dQ $= \frac{d ϕ}{R}$ $= \frac{5 \times 1 0 ^{- 6}}{2} = 2.5 \times 1 0^{- 6} C$

Stream:VITEEESubject:PhysicsTopic:EMI/ACSubtopic:Faraday law/Lenz law

⏱ 2mℹ️ Source: PYQ_2011

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