RPA Science GCSE RP Resistance of a Wire

What type of wire is used in this investigation?

• Copper wire

• Nichrome wire

• Aluminum wire

• Silver wire

What is the purpose of the voltmeter in the circuit?

• To measure the current

• To measure the resistance

• To measure the potential difference

• To measure the length of the wire

Which component is connected to one end of the resistance wire?

• Battery

• Ammeter

• Voltmeter

• Crocodile clip

What happens if the wire starts heating up during the experiment?

• The resistance of the wire decreases

• The resistance of the wire increases

• The current in the circuit decreases

• The current in the circuit increases

At what length of wire does the experiment stop?

• 10 centimeters

• 20 centimeters

• 30 centimeters

• 40 centimeters

What type of relationship is expected between resistance and length of wire?

• Negative correlation

• Positive correlation

• No correlation

• Inverse correlation

What is the purpose of the battery in the circuit?

• To measure the current

• To measure the resistance

• To provide energy

• To control the voltage

What is the formula that includes resistance, current, and potential difference

• V = I x R

• V = I/R

• I = V x R

• C = V x R

As the length of wire increases...

• the resistance increases

• the resistance decreases

• the resistance stays the same

• the current increases