AQA Physics Paper 1- Electricity

Used to measure potential difference.

• Voltmeter
• Ammeter
• LED
• resistor

Designed to melt and break the circuit is the current is too great.

• LDR
• Fixed resistor
• fuse
• diode

Which one is True?

• The greater the Resistance the Smaller the Current

• The greater the Resistance the Greater the Current

Which one is a LDR?

• It senses Light. The brighter the light the lower the resistance.

• It senses Temperature. The hotter the temperature the lower the resistance.

The amount of current flowing in a circuit depends on...

• Potential difference and resistance

• Charge and power

• resistance only

• potential difference only

• potential difference and charge

What are the units for current?

• Amps

• Volts

• Coulombs

• Watts

What is the current in the main branch (I_s) of the circuit shown?

• 6 A

• 12 A

• 18 A

Which one is a Neutral Wire?

• Brown. Provides the alternating potential difference

• Blue. Completes the circuit and carries away current

• Green and Yellow. Only carries current when there is a fault

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

Which one is an Earth Wire?

• Brown. Provides the alternating potential difference

• Blue. Completes the circuit and carries away current

• Green and Yellow. Only carries current when there is a fault