JEE Main 2020 — Electromagnetic Induction Question with Solution
From: JEE Main 2020 (Online) 5th September Morning Slot
Question
Two concentric circular coils, C1 and C2 are
placed in the XY plane. C1 has 500 turns, and
a radius of 1 cm. C2 has 200 turns and radius
of 20 cm. C2 carries a time dependent current
I(t) = (5t2 – 2t + 3) A where t is in s. The emf
induced in C1 (in mV), at the instant t = 1 s is
. The value of x is ___ .
placed in the XY plane. C1 has 500 turns, and
a radius of 1 cm. C2 has 200 turns and radius
of 20 cm. C2 carries a time dependent current
I(t) = (5t2 – 2t + 3) A where t is in s. The emf
induced in C1 (in mV), at the instant t = 1 s is
. The value of x is ___ .
Enter your answer
Show full solutionCorrect answer: 5
Correct answer
5
Step-by-step explanation
Total flux
=
We know,
At
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