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NEET-XII-Physics

40: Electromagnetic Waves

with Solutions - page 2
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  • #2
    Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor
    (a) increases
    (b) decreases
    (c) does not change
    (d) is zero
    digAnsr:   a,b
    Ans : (a) increases
    (b) decreases
    Displacement current inside a capacitor,
    `` {i}_{\,\mathrm{\,d\,}}={\epsilon }_{0}\frac{d{\varphi }_{\,\mathrm{\,E\,}}}{dt}``, where
    Ï•E is the electric flux inside the capacitor.
    Up to the time the electric flux changes, there will be a displacement current. This is possible when the charge on a capacitor changes. Therefore, the displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor or electric field increases or decreases inside the capacitor.
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