Series Circuits

Q. Which of the following as the electric source would make an electric bulb glow the brightest? Consider all the cells to be identical.

1. 2 cells connected in series
2. 4 cells connected in parallel
3. 3 cells connected in series
4. 5 cells connected in parallel

Q. By connecting cells in series, we get a _______.

1. switch
2. battery
3. fuse
4. bulb

Q. Consider the given circuit in which three bulbs A, B and C are connected in series. Which bulbs will glow when the tip of the safety-pin (acting as the switch) touches the end Y?

1. A and B
2. B and C
3. A and C
4. A, B and C