Ohm's Law

How can you make the bulb brighter ?

• Add more bulbs

• Add more batteries

• Make the wires shorter

• Make wires longer

What would happen if you added an extra bulb?

• Nothing

• The light bulb would get dimmer

• The light bulb would get brighter

• The circuit wouldn't work

What would happen if you added an extra branch of lightbulb (switches closed)?

• Nothing

• The light bulb would get dimmer

• The light bulb would get brighter

• The circuit wouldn't work

In a series connection, why do remaining bulbs not light up when one bulb is taken out of its holder?

• The path of electric current was renewed.

• The other bulbs will not light.

• The path of electric current became incomplete.

• The other bulbs were burnt out.

If the ammeter says the current is 5A, what is the current flowing through one bulb?

• 2.5A

• 10A

• 5A

• 0A

Adding another electrical appliance in parallel causes a decrease in current. (提示：并联越并，电阻越小)

• This statement is true.

• This statement is false.

Increasing resistance causes a decrease in current.

• This statement is true.

• This statement is false.

Decreasing resistance causes a decrease in current.

• This statement is true.

• This statement is false.

Adding another electrical appliance in series causes a decrease in current.(提示：串联越串，电阻越大)

• This statement is true.

• This statement is false.

Decreasing voltage from the power supply causes a decrease in current.

• This statement is true.

• This statement is false.