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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 electric field at a point?

Please select an answer first.

Correct answer: A

The correct answer is Force per unit positive test charge.

  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 electric field is defined by (\vec E=\vec F/q) for a positive test charge.
  3. Check signs, units, and direction: The correct answer is Force per unit positive test charge.

The electric field is defined by (\vec E=\vec F/q) for a positive test charge.

2. QuestionMultiple choice

What is the direction of the electric field from a positive point charge?

Please select an answer first.

Correct answer: B

The correct answer is Radially outward.

  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 positive test charge is repelled by a positive source charge, so the field points outward.
  3. Check signs, units, and direction: The correct answer is Radially outward.

A positive test charge is repelled by a positive source charge, so the field points outward.

3. QuestionMultiple choice

What is electric potential energy of a charge in a potential?

Please select an answer first.

Correct answer: C

The correct answer is The charge multiplied by electric potential.

  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: For a charge q at electric potential V, the potential energy is (U=qV) relative to the chosen reference.
  3. Check signs, units, and direction: The correct answer is The charge multiplied by electric potential.

For a charge q at electric potential V, the potential energy is (U=qV) relative to the chosen reference.

4. QuestionMultiple choice

What is an equipotential surface?

Please select an answer first.

Correct answer: D

The correct answer is A surface where electric potential is constant.

  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: Moving a charge along an equipotential requires no net work because the potential difference is zero.
  3. Check signs, units, and direction: The correct answer is A surface where electric potential is constant.

Moving a charge along an equipotential requires no net work because the potential difference is zero.

5. QuestionMultiple choice

What is the electric field inside an ideal conductor in electrostatic equilibrium?

Please select an answer first.

Correct answer: A

The correct answer is Zero.

  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: Free charges redistribute on the surface until the internal electrostatic field is zero.
  3. Check signs, units, and direction: The correct answer is Zero.

Free charges redistribute on the surface until the internal electrostatic field is zero.

6. QuestionMultiple choice

What does capacitance measure?

Please select an answer first.

Correct answer: B

The correct answer is Charge stored per unit potential difference.

  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: Capacitance is (C=Q/V), measured in farads.
  3. Check signs, units, and direction: The correct answer is Charge stored per unit potential difference.

Capacitance is (C=Q/V), measured in farads.

7. QuestionMultiple choice

A capacitor stores 6 C6\,\text{C} at 3 V3\,\text{V}. What is its capacitance?

Please select an answer first.

Correct answer: C

The correct answer is 2 F2\,\text{F}.

  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: Using (C=Q/V), the capacitance is (6/3=2\,\text{F}).
  3. Check signs, units, and direction: The correct answer is 2 F2\,\text{F}.

Using (C=Q/V), the capacitance is (6/3=2\,\text{F}).

8. QuestionMultiple choice

Where is electrostatic potential energy stored in a charged capacitor?

Please select an answer first.

Correct answer: D

The correct answer is In its electric field.

  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 charged capacitor stores energy in the electric field between its conductors: (U=\frac12CV^2).
  3. Check signs, units, and direction: The correct answer is In its electric field.

A charged capacitor stores energy in the electric field between its conductors: (U=\frac12CV^2).

9. QuestionMultiple choice

What happens to the electric force between two point charges if their separation doubles?

Please select an answer first.

Correct answer: A

The correct answer is It becomes one-fourth as large.

  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: Coulomb's law gives (F\propto1/r^2), so doubling r reduces the force by a factor of four.
  3. Check signs, units, and direction: The correct answer is It becomes one-fourth as large.

Coulomb's law gives (F\propto1/r^2), so doubling r reduces the force by a factor of four.

10. QuestionMultiple choice

What does a negative electric potential energy for two opposite charges indicate relative to a zero-at-infinity reference?

Please select an answer first.

Correct answer: B

The correct answer is The opposite-charge configuration is bound relative to that reference.

  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: Opposite charges attract and have negative potential energy with zero chosen at infinite separation.
  3. Check signs, units, and direction: The correct answer is The opposite-charge configuration is bound relative to that reference.

Opposite charges attract and have negative potential energy with zero chosen at infinite separation.

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