A capacitor 'C', variable resistor 'R' and a bulb 'B' are connected in series to the ac mains in circuit as shown. The bulb glows with some brightness. How will the glow of the bulb change if :
(i) a dielectric slab is introduced between the plates of the capacitor, keeping resistance R to be the same :

(ii) The resistance R is increased keeping the same capacitance ?

A capacitor C, a variable resistor R and a bulb B are connected in series to the ac mains in circuits as shown if Fig. The bulb glows with some brightness. How will the glow of the bulb change if (i) a dielectric slab is introduced between the plates of the capacitor, keeping resistance T to be the same, (ii) the resistance R to be the same, (ii) the resistance R is increased keeping the same capacitance.

A capacitor and a bulb are connected in series with a source of alternating emf. If a dielectric slab is inserted between the plates of the capacitor, then

A dielectric slab is placed between the plates of a parallel plate capacitor. Its capacitance A. become zero B. remains the same C. decrease D. increase

A bulb and a conender are connected in series with an A.C source. On increasing the frequency of the source its brightness will

A 25W and 100W bulbs are joined in series and connected to the mains. Which bulb will glow brighter?

An electric bulb and a capacitor are connected in series with an AC source.On increasing the freqency of the source, the brightness of the bulb

A bulb and a capacitor are connected in series to an a.c. source of variable frequency. How will the brightness of the bulb change on increasing the frequency of a.c. source ?

A parallel plate capacitor is connected across a battery. Now, keeping the battery connected, a dielectric slab is inserted between the plates. In the process,

Assertion : Resonance frequency will decrease in L-C-R series circuit if a dielectric slab is inserted in between the plates of the capacitor. Reason : By doing so, capacity of capacitor will increase.

Thirteen resistors each of resistance R are connected in the circuit as shown . The effective resistance between A and B is