# GENERAL KNOWLEDGE

## GK

### INVENTIONS

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two or more light bulbs are connected to one battery:
 A Parallel circuit B Series circuit C Simple circuit D None of the above
Explanation:

Detailed explanation-1: -A series circuit is a Voltage Divider. Two light bulbs on the same series circuit share the voltage of the battery: if the battery is 9V, then each bulb gets 4.5 volts. A parallel circuit avoids this problem.

Detailed explanation-2: -A bulb connected by two cells in parallel is equally bright as when connected to one cell. In both cases the voltage is 1.5 V. Two cells in parallel will last twice as long as a single cell. Two cells in series produce a brighter bulb, but will last as long as a single cell.

Detailed explanation-3: -A series circuit can be constructed by connecting light bulbs in such a manner that there is a single pathway for charge flow; the bulbs are added to the same line with no branching point. As more and more light bulbs are added, the brightness of each bulb gradually decreases.

There is 1 question to complete.