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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACFaraday law/Lenz lawEasy2 minPYQ_2024

PhysicsEasynumerical

The magnetic flux $ϕ$ (in weber) linked with a closed circuit of resistance $8 Ω$ varies with time (in seconds) as $ϕ = 5 t^{2} - 36 t + 1$ . The induced current in the circuit at $t = 2 s$ is _______ $A$ .

Answer:

2.00

Solution:

Induced EMF is given by, $|ε| = |- (\frac{d ϕ}{d t})| = |10 t - 36|$

Now, it is given that at $t = 2 s, ε = 16 V$ .

Therefore, $i = \frac{|ε|}{R} = \frac{16}{8} = 2 A$

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

⏱ 2mℹ️ Source: PYQ_2024

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