Refer to the circuit below containing a battery, a capacitor, a bulb and a switc
ID: 1415057 • Letter: R
Question
Refer to the circuit below containing a battery, a capacitor, a bulb and a switch. The switch is initially open as shown in the diagram, and the capacitor is uncharged.: Which correctly describes what happens to the bulb when the switch is closed? The bulb is dim and remains dim. At first the bulb is dim and it gets brighter and brighter until its brightness levels off. The bulb is bright and remains bright. At first the bulb is bright and it gets dimmer and dimmer until it goes off. None of these is correct.Explanation / Answer
the correct answer is option D
since initially the capacitor is uncharged. As soon as the switch is closed , currnet starts flowing initially maximum current flows through the circuit therefore the bulb glows brightest ,,,,,,,now the capacitor starts charging and the current in the circuit starts decreasing , so the brightness of the bulb decreases , till it goes off.