Physics - EM Waves Question with Solution | TestHub

PhysicsEM WavesElectromagnetic wavesMedium2 minPYQ_2021

PhysicsMediumsingle choice

A capacitor of capacitance $C$ , is connected across an ac source of voltage $V$ , given by $V = V_{0} \sin (ω t)$ . The displacement current between the plates of the capacitor would then be given by___NEET 2021

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Answer:

Solution:

$∵ q = C V$

And $V = V_{0} \sin ω t$

$I_{d} = ?$

As we know,

$∵ I_{d} = ε_{0} \frac{d Q}{d t}$

$= ε_{0} \frac{d E A}{d t} (∵ E = \frac{V}{d})$

$= \frac{ε_{0} A d V}{d d t}$

$= (\frac{ε_{0} A}{d}) \frac{d}{d t} V_{0} \sin ω t$

$I_{d} = C V_{0} ω \cos ω t$

Stream:NEETSubject:PhysicsTopic:EM WavesSubtopic:Electromagnetic waves

⏱ 2mℹ️ Source: PYQ_2021

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