Electricity Required Practicals

In the 'Resistance across a Wire' Required Practical - What is the independent variable?

• Length of wire

• Resistance

• Temperature

• Diameter of the Wire

In the 'IV Characteristics' Required Practical - What is the independent variable?

• Potential Difference of the power supply

• Current across the component

• Potential Difference across the component

In the 'IV Characteristics' Required Practical - What is the dependent variable?

• Potential Difference of the power supply

• Current across the component

• Potential Difference across the component

In the 'IV Characteristics' Required Practical - What is the control variable?

• Potential Difference of the power supply

• Current across the component

• Potential Difference across the component

In the 'Resistance across a Wire' Required Practical - What is the dependent variable?

• Length of wire

• Resistance

• Temperature

• Diameter of the Wire

In the 'Resistance across a Wire' Required Practical - What is a control variable?

• Length of wire

• Resistance

• Temperature

• Diameter of the Wire

In the 'Resistance across a Wire' Required Practical - Which instrument is used to measure the current?

• Voltmeter

• Ammeter

• Ohmmeter

In the 'Resistance across a Wire' Required Practical - How is resistance calculated?

• Current divided by potential difference

• Potential difference divided by current

• Current multiplied by Potential Difference

Select relevant equipment for the Resistance across a Wire practical

• Voltmeter

• Ruler

• Variable Resistor

• Ammeter

• Alternating Power Supply

In the 'Resistance across a Wire' Required Practical - How do you ensure that the temperature of the wire does not affect the results?

• By cooling the wire with ice

• By using a wire with a high melting point

• By keeping the current low

• By conducting the experiment quickly