# GENERAL KNOWLEDGE

## GK

### PHYSICS

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Does this statement best describe a parallel or a series circuit. When more light bulbs are added they all remain bright.
 A Parallel circuit B Series circuit C Either A or B D None of the above
Explanation:

Detailed explanation-1: -The current passing through each bulb is the same. By adding more light bulbs in the series, it will draw less current from the power source. As more light bulbs are added in series, the brightness of the bulbs will stay the same.

Detailed explanation-2: -Increasing the number of bulbs in a series circuit decreases the brightness of the bulbs. In a series circuit, the voltage is equally distributed among all of the bulbs. Bulbs in parallel are brighter than bulbs in series. In a parallel circuit the voltage for each bulb is the same as the voltage in the circuit.

Detailed explanation-3: -This is because the resistance R increases which causes the current I through each bulb to decrease (recall I = V/R). In a parallel circuit, as more bulbs are added, the brightness of each bulb remains unchanged – each bulb acts independently of the other bulbs in this case.

Detailed explanation-4: -Two bulbs in a simple parallel circuit each enjoy the full voltage of the battery. This is why the bulbs in the parallel circuit will be brighter than those in the series circuit.

There is 1 question to complete.