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Energy and voltage in circuits

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Question 46
a.

The diagram shows part of an electric circuit.

A circuit diagram template showing a three-cell battery at the top, a single lamp symbol (a circle with an 'X' inside) at the bottom, and open terminal wires indicating where other components should be connected.

Explain how to complete the circuit diagram by describing where to place the following components:

  • a fixed resistor in series with the lamp and battery
  • a second lamp in parallel with the first lamp
  • a voltmeter that measures the voltage across the resistor
  • an ammeter that measures the total current in the circuit
[4]
b.

The current in a resistor is measured for different voltages. The table below shows the results.

Voltage (VVV)Current (III)
2.00.10
4.00.20
6.00.38
8.00.40
10.00.50
12.00.60

Identify the anomalous data point in the table.

[1]
c.

State the equation linking voltage, current, and resistance.

[1]
d.

Use the non-anomalous data to calculate the resistance of the resistor.

[2]

Energy and voltage in circuits Questions

  1. IGCSE
  2. /Physics
  3. /Energy and voltage in circuits