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Electricity and Magnetism Practice Tests

These Grade 11 Science practice tests examine charge, current, voltage, resistance, series and parallel circuits, electric fields, potential, capacitance, magnetic forces, induction, motors, generators, and experimental analysis.

Skills covered

  • Applying \(V=IR\), \(P=IV\), charge-flow, energy, and series-parallel circuit relationships
  • Using electric field, electric potential, capacitance, and Coulomb-law ideas with units and direction
  • Explaining magnetic force, right-hand rules, electromagnetic induction, Lenz's law, motors, generators, and transformers
  • Applying Kirchhoff's junction and loop rules and reasoning about circuit protection
  • Interpreting V-I graphs, uncertainty, calibration, safe procedures, and experimental evidence

How to use these practice tests

Define the circuit or field system first. Choose the correct law, keep units consistent, and check signs, directions, energy transfers, and limiting cases.

For more Grade 11 Science practice, return to the Grade 11 Science category.

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Grade 11 Electricity and Magnetism Practice Tests

Practice Grade 11 Science questions about charge, current, voltage, resistance, circuits, electric fields, capacitors, magnetic forces, induction, motors, generators, and experiments.

Choose the best answer. Define the circuit or field system, select the governing law, track units and direction, and check whether the result is physically reasonable.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is the independent variable when measuring current for several applied voltages across a resistor?

Please select an answer first.

Correct answer: A

The correct answer is Applied voltage, if it is deliberately changed.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: The independent variable is controlled by the investigator; current is the response measured for each voltage.
  3. Check signs, units, and direction: The correct answer is Applied voltage, if it is deliberately changed.

The independent variable is controlled by the investigator; current is the response measured for each voltage.

2. QuestionMultiple choice

What does the slope of a current-versus-voltage graph represent for an ohmic resistor?

Please select an answer first.

Correct answer: B

The correct answer is The reciprocal of resistance.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: From (I=V/R), a graph of I versus V has slope (1/R).
  3. Check signs, units, and direction: The correct answer is The reciprocal of resistance.

From (I=V/R), a graph of I versus V has slope (1/R).

3. QuestionMultiple choice

What does the slope of a voltage-versus-current graph represent?

Please select an answer first.

Correct answer: C

The correct answer is Resistance.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Ohm's law (V=IR) means the slope of V versus I is R for an ohmic component.
  3. Check signs, units, and direction: The correct answer is Resistance.

Ohm's law (V=IR) means the slope of V versus I is R for an ohmic component.

4. QuestionMultiple choice

Why should a student avoid using a wire that becomes hot when testing Ohm's law?

Please select an answer first.

Correct answer: D

The correct answer is Its resistance can change with temperature, violating the controlled condition.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Many conductors change resistance as they heat, so the V-I relationship may no longer remain constant.
  3. Check signs, units, and direction: The correct answer is Its resistance can change with temperature, violating the controlled condition.

Many conductors change resistance as they heat, so the V-I relationship may no longer remain constant.

5. QuestionMultiple choice

A 9 V9\,\text{V} battery supplies 0.5 A0.5\,\text{A} for 10 s10\,\text{s}. How much electrical energy is transferred?

Please select an answer first.

Correct answer: A

The correct answer is 45 J45\,\text{J}.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Power is (P=IV=0.5\times9=4.5\,\text{W}), so energy is (E=Pt=4.5\times10=45\,\text{J}).
  3. Check signs, units, and direction: The correct answer is 45 J45\,\text{J}.

Power is (P=IV=0.5\times9=4.5\,\text{W}), so energy is (E=Pt=4.5\times10=45\,\text{J}).

6. QuestionMultiple choice

What is a random error in a circuit measurement?

Please select an answer first.

Correct answer: B

The correct answer is Unpredictable trial-to-trial variation.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Random error creates scatter and can be estimated through repeated measurements.
  3. Check signs, units, and direction: The correct answer is Unpredictable trial-to-trial variation.

Random error creates scatter and can be estimated through repeated measurements.

7. QuestionMultiple choice

What is a systematic error in a voltmeter?

Please select an answer first.

Correct answer: C

The correct answer is A consistent calibration offset in many readings.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: A systematic offset biases measurements in a consistent way and is not removed simply by taking more readings.
  3. Check signs, units, and direction: The correct answer is A consistent calibration offset in many readings.

A systematic offset biases measurements in a consistent way and is not removed simply by taking more readings.

8. QuestionMultiple choice

Why are electrical components connected in parallel in many household circuits?

Please select an answer first.

Correct answer: D

The correct answer is Each branch can receive the source voltage and operate independently.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Parallel branches share voltage and allow one device to operate even if another branch is switched off.
  3. Check signs, units, and direction: The correct answer is Each branch can receive the source voltage and operate independently.

Parallel branches share voltage and allow one device to operate even if another branch is switched off.

9. QuestionMultiple choice

What should a student conclude if measured resistance values overlap within uncertainty?

Please select an answer first.

Correct answer: A

The correct answer is The data are consistent with a constant resistance within experimental precision.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Overlap within uncertainty supports the model for the tested conditions but does not eliminate all possible systematic error.
  3. Check signs, units, and direction: The correct answer is The data are consistent with a constant resistance within experimental precision.

Overlap within uncertainty supports the model for the tested conditions but does not eliminate all possible systematic error.

10. QuestionMultiple choice

What is a safe practice when investigating circuits?

Please select an answer first.

Correct answer: B

The correct answer is Turn off power before changing connections and use appropriate current limits.

  1. Identify the electrical or magnetic system: Determine the charge, current, voltage, field, circuit connection, or force described in the question.
  2. Apply the governing relationship: Power should be removed before rewiring, and current and voltage must remain within safe equipment and component limits.
  3. Check signs, units, and direction: The correct answer is Turn off power before changing connections and use appropriate current limits.

Power should be removed before rewiring, and current and voltage must remain within safe equipment and component limits.

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