A lamp is connected in series with a capacitor

Asked by admin @ 13/08/2021 in Physics viewed by 294 People

a lamp is connected in series with a capacitor .predict your observations for 1)dc and 2)ac connection. What happens in each case if dielectric slab is introduced in the capacitor?

Answered by admin @ 13/08/2021

For DC connection, initially the lamp will shine for a moment and at the steady state capacitor acts as an open circuit and hence lamp will not shine.
For AC connection, Lamp will shine as the current is finite i.e.
Now, if the capacitance is reduced, the (1/ωC) factor in the denominator increases and hence the current decreases. Thus brightness of the lamp reduces.

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