As more and more light bulbs are added, the brightness of each bulb gradually decreases. This observation is an indicator that the current within the circuit is decreasing. So for series circuits, as more resistors are added the overall current within the circuit decreases.

## Why does current increase when more bulbs are added?

Because the bulbs are added in parallel, the resistance in the circuit from the bulbs is reduced increasing the current (flow of electrons) through the circuit. The total flow of electrons increases because the current drawn by the system increases.

## What is the advantage of connecting bulbs in series?

Voltage. Connecting in series divides up the source voltage in proportion to the loads’ individual impedances. In a series circuit, you can measure voltage using a voltmeter, which should be connected parallel to the component.

## What happens to the current in a parallel circuit as more light bulbs are added?

As more bulbs were added, the current increased. As more resistors are added in parallel, the total current strength increases. The overall resistance of the circuit must therefore have decreased. The current in each light bulb was the same because all the bulbs glowed with the same brightness.

## Which one will still function if one light bulb goes out?

In a series circuit, every device must function for the circuit to be complete. One bulb burning out in a series circuit breaks the circuit. In parallel circuits, each light has its own circuit, so all but one light could be burned out, and the last one will still function.

## Why is earthing needed?

Earthing is used to protect you from an electric shock. It does this by providing a path (a protective conductor) for a fault current to flow to earth. It also causes the protective device (either a circuit-breaker or fuse) to switch off the electric current to the circuit that has the fault.

## What is the difference between earth and neutral?

The major difference between the two is, Earthing provides a grounding point and neutral provides a returning point to the flow of electricity….Difference Between Earthing and Neutral:

Earth Neutral
It doesn’t carry any current. It will be having minor electricity during any electrical disconnections. It always carries current.