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PhysicsEMI/ACSelf and mutual inductorMedium2 minQB

PhysicsMediummultiple choice

A variable voltage $V = 2 t$ applied across an inductor of inductance $L = 2 H$ is shown in figure. Then,

Answer:

A, B, C

Solution:

Ans (A,B,C)

$L \frac{d i}{d t} = 2 t \Rightarrow i = \frac{t ^{2}}{2} \Rightarrow$ parabola

$U = \frac{1}{2} L i^{2}$ at t = 2 sec, U = 4 J

$\frac{d U}{d t} = \frac{1}{2} L \times 2 i \frac{d i}{d t} = 1$ J/sec

Stream:JEESubject:PhysicsTopic:EMI/ACSubtopic:Self and mutual inductor

⏱ 2mℹ️ Source: QB

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