A capacitor C, a variable resistance R and a bulb are connected in series to a.c. mains in the circuit as shown. The bulb glows with some brightness. How the glow of the bulb change if. A dielectric slab is introduced between the plates of the capacitor.

A capacitor C, a variable resistance R and a bulb are connected in ser

1.	A capacitor C, a variable resistance R and a bulb are connected in series to a.c. mains in the circuit as shown. The bulb glows with some brightness. How the glow of the bulb change if. A dielectric slab is introduced between the plates of the capacitor.
Answer» SOLUTION :The brightness of bulb INCREASES (When DIELECTRIC slab is introduced, capacitance increases hence capacitive reactance DECREASES, then bulb glows with more brightness.)

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A capacitor C, a variable resistance R and a bulb are connected in series to a.c. mains in the circuit as shown. The bulb glows with some brightness. How the glow of the bulb change if. A dielectric slab is introduced between the plates of the capacitor.

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