# What happens to the bulb as the number of batteries increases?

## What happens to the bulb as the number of batteries increases?

When using batteries, increasing the voltage also increases the current in the circuit. An increase in the current is observed when the brightness of the bulb increases. If any series bulb is unscrewed, an open circuit is created and no current exists.

What is the relationship between the battery voltage and the bulb voltages?

The voltage across a bulb is the same as the battery voltage in a series circuit ONLY IF the bulb and the battery are the only components in the circuit. If there are any other loads in series with the bulb, the voltage across a bulb is NOT the same as the battery voltage in a series circuit.

When the bulb further from the battery is disconnected in the parallel circuit What happens to the other bulb?

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.

### What affects the brightness of a bulb current or voltage?

So technically speaking brightness depends on both voltage and current. An increase in either voltage or current will increase the brightness of a bulb. In incandescent bulbs, this is the case. But technically speaking, you cannot usually increase current at your end.

What happens to the current produced by the battery if you keep adding more bulbs in parallel?

As more bulbs are connected in parallel, the current strength should increase because the overall resistance of the circuit decreases.

What happens to the bulbs in a series circuit if one bulb blows?

When a bulb in a series circuit blows off, the power supply to all other bulbs is cut off. Hence, all the other bulbs are switched off.

## What may happen if you add another bulb to both of your setups?

When you plug in that second bulb, both will get equally dim, because you have added more resistance to your circuit, which decreases the flow of current. Adding another light bulb in series decreases the current because our battery now has more work to do! You just add all of the different resistance values together.

What will happen if one bulb is removed from a parallel circuit?

In one bulb in a parallel circuit is removed, nothing happens to the rest of the bulbs.

What will happen if one light bulb is removed from series circuit?

When one light bulb is removed from the series circuit, the other two light bulbs go out. When one part of the series circuit is removed, the circuit is “open”; the other parts do not receive electric energy.

### What happens to the brightness of bulb A?

The brightness of the bulb increases when the voltage is increased. All the bulbs in the circuit go out when a bulb is removed. The brightness of the bulbs decreases when the number of bulbs is increased.

Why does brightness increase with voltage?

The higher the voltage v the higher the current. If the brightness is caused by a flow of electrons through the filament, a higher voltage will–all things being equal– drive more electrons to flow through the filament. So the brightness is a function of both current and voltage, and can be said to depend on both.

Which circuits will light the bulb?

When the wires in the circuit are connected to the metal casing and metal tip of the bulb, there is a closed (or complete) circuit with the bulb. Electricity will be able to flow through the filament, causing the bulb to light up.

## What happens when the battery is removed from a light bulb?

This is when the light bulb will dim and then fizzle out. When the battery is removed from the circuit, there is nothing to maintain the potential difference between the plates, and the capacitor will discharge. As this happens, there will once again be a nonzero current flowing through the circuit, and the bulb will light up.

What happens to a light bulb when the capacitor is charged?

However, the capacitor will eventually be fully charged at which point the potential between its plates will match the voltage of the battery, and the current in the circuit will drop to zero. This is when the light bulb will dim and then fizzle out.

What happens when you connect light bulbs in series?

Consider a circuit powered by a battery. If light bulbs are attached in parallel, the current will be divided across all of them. But if the light bulbs are connected in series, the current will be the same in all of them.

### Why does a light bulb glow brighter in a parallel circuit?

When the bulbs are in parallel, each bulb sees the full voltage V so P = V 2 R. Since a bulb glows brighter when it gets more power the ones in parallel will glow brighter. See, the parallel combination of resistors reduces the effective resistance of the circuit. The voltage drop across each resistance is the same as the applied one.