# How do you light a lightbulb with a battery wire and a switch?

## How do you light a lightbulb with a battery wire and a switch?

Light the bulb using two wires. Attach one wire to the negative end of the battery and wrap the other end of the same wire around the base of the bulb. Attach the other wire to the positive end of the battery with electrical tape and to the base of the bulb, completing the circuit and lighting the bulb.

## How the bulb will light up in a simple direct current circuit?

The wire and electric devices must be able to conduct electricity. Metal such as copper is a good conductor of electricity and has a low resistance. The tungsten filament in a light bulb conducts electricity, but it has high resistance that causes it to heat up and glow.

What do all the objects that did not light up the bulb have in common?

Bulb does not light up Some metals are better conductors than others. What do all the objects that did not light up the bulb have in common? Some metals are better conductors than others. If the bulb does not light up with some metallic objects, it might be that the current is very small.

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

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 is the current through the battery after switch 1 has been closed?

Both switches are initially open, and the capacitor is uncharged. What is the current through the battery after switch 1 has been closed a long time? 1) I b= 0 2) I b= E/(3R ) 2R I b () 3) I b= E/(2R) 4) I b= E/R ε+C R – + – S 2 S 1 • Long time ⇒current through capacitor is zero •I b=0 because the battery and capacitor are in series.

How many lightbulbs will remain lit If wire is cut?

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut a the point shown by the arrow? Which of these changes to the electric circuit shown above will cause the lightbulb to light up. A string of lights with small bulbs is shown below.

## What do you see when you connect 2 batteries to one light bulb?

You have doubled the voltage and doubled the resistance; the current/brightness of each bulb in the 2 battery/2 bulb circuit should be the same as in the 1 battery/1 bulb circuit. B. Briefly connect the 2 batteries to a single light bulb. (Just touch the terminal). What do you see?

## What happens if one lightbulb is burned out in a circuit?

In some circuits that are used for decorating, one burned-out lightbulb will prevent all the other lightbulbs from lighting. In other circuits, one burned-out lightbulb will have no effect on the other lightbulbs. In which of these circuits will the other lightbulbs still light even if one bulb is burned out?