TS EAMCET · Physics · Electromagnetic Waves
A long straight solenoid with a cross-sectional radius and number of turns per unit length has a current varying with time as The magnitude of the electric field as a function of distance from the solenoid axis is,
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
From the idea of electromagnetic induction, the line integral fo electric field is the rate of change of flux, ∮E→.dl→=-∂ϕ∂t, when, r<a, then E2πr=-πr2μ0nI⇒E=-μ0nIr2 for, r>a,…
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