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AP Exams AP Physics Electricity Easy Practice Question

Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake

Shortcut used: Choose the governing electricity or magnetism relation, convert prefixes to SI units, and check sign, direction, and dimensions.

Solve in 3 steps:

Mark the given values and the exact target.
Apply the relevant formula, rule, or concept.
Check the final value against the options.

Common mistake: Do not choose an option before confirming the exact demand of the question.

Question 4 Multiple Choice Question

Question

What is the electric potential 0.20 m from a +4.0 μC point charge in vacuum, taking zero potential at infinity? Use k = 9.0 × 10^9 N·m²/C².

Explanation

Correct Answer: D

ANSWER

Correct Answer: D

Method / Topic: Electricity

For a point charge, V = kq/r = (9.0 × 10^9)(4.0 × 10^-6)/0.20 = 1.8 × 10^5 V.

Why this answer is correct

The correct option matches the required rule and the given information.

Short Explanation

For a point charge, V = kq/r = (9.0 × 10^9)(4.0 × 10^-6)/0.20 = 1.8 × 10^5 V.

Detailed Explanation

Question

What is the electric potential 0.20 m from a +4.0 μC point charge in vacuum, taking zero potential at infinity? Use k = 9.0 × 10^9 N·m²/C².

ANSWER

Correct Answer: D

Method / Topic: Electricity

For a point charge, V = kq/r = (9.0 × 10^9)(4.0 × 10^-6)/0.20 = 1.8 × 10^5 V.

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Question 4

Easy Marks: 1.0 Practice Question

Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake

Shortcut used: Choose the governing electricity or magnetism relation, convert prefixes to SI units, and check sign, direction, and dimensions.

Solve in 3 steps:

Mark the given values and the exact target.
Apply the relevant formula, rule, or concept.
Check the final value against the options.

Common mistake: Do not choose an option before confirming the exact demand of the question.

Question

What is the electric potential 0.20 m from a +4.0 μC point charge in vacuum, taking zero potential at infinity? Use k = 9.0 × 10^9 N·m²/C².

Explanation

Correct Answer: D

ANSWER

Correct Answer: D

Method / Topic: Electricity

For a point charge, V = kq/r = (9.0 × 10^9)(4.0 × 10^-6)/0.20 = 1.8 × 10^5 V.

Why this answer is correct

The correct option matches the required rule and the given information.

Short Explanation

For a point charge, V = kq/r = (9.0 × 10^9)(4.0 × 10^-6)/0.20 = 1.8 × 10^5 V.

Detailed Explanation

Question

What is the electric potential 0.20 m from a +4.0 μC point charge in vacuum, taking zero potential at infinity? Use k = 9.0 × 10^9 N·m²/C².

ANSWER

Correct Answer: D

Method / Topic: Electricity

For a point charge, V = kq/r = (9.0 × 10^9)(4.0 × 10^-6)/0.20 = 1.8 × 10^5 V.

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convert prefixes to SI units and check sign direction and dimensions.

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See full explanation + shortcut trick

Shortcut used, common trap, and the fastest solving route

What is the electric potential 0.20 m from a +4.0 μC point charge in vacuum, taking zero potential at infinity? Use k = 9.0 × 10^9 N·m²/C².

Explanation

Short Explanation

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Shortcut used, common trap, and the fastest solving route

What is the electric potential 0.20 m from a +4.0 μC point charge in vacuum, taking zero potential at infinity? Use k = 9.0 × 10^9 N·m²/C².

Explanation

Short Explanation

Detailed Explanation

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