Electricity & Magnetism Review

What is the formula for Ohm's Law?

• V = IR

• I = V/R

• R = V/I

• All of the above

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DOK Level 1: Recall

According to Faraday's Law, what induces an electromotive force (EMF) in a circuit?

• A constant magnetic field

• A changing magnetic field

• A constant electric field

• A changing electric field

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DOK Level 1: Recall

If a circuit has a voltage of 12V and a resistance of 4Ω, what is the current flowing through the circuit?

• 2A

• 3A

• 4A

• 6A

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DOK Level 2: Skill/Concept

What is the unit of resistance?

• Volt

• Ampere

• Ohm

• Watt

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DOK Level 1: Recall

In a series circuit, how does the total resistance compare to the individual resistances?

• The total resistance is the sum of the individual resistances.

• The total resistance is the product of the individual resistances.

• The total resistance is the average of the individual resistances.

• The total resistance is the reciprocal of the sum of the reciprocals of the individual resistances.

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DOK Level 2: Skill/Concept

What happens to the total current in a parallel circuit if one of the branches is removed?

• The total current increases.

• The total current decreases.

• The total current remains the same.

• The total current becomes zero.

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DOK Level 2: Skill/Concept

Which of the following is true about magnetic fields?

• They are produced by stationary electric charges.

• They are produced by moving electric charges.

• They are produced by both stationary and moving electric charges.

• They are not related to electric charges.

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DOK Level 1: Recall

How does the voltage across each component in a parallel circuit compare?

• The voltage is the same across each component.

• The voltage is different across each component.

• The voltage is zero across each component.

• The voltage is the sum of the voltages across each component.

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DOK Level 2: Skill/Concept

If a magnet is cut in half, what happens to its magnetic poles?

• Each half will have only one pole.

• Each half will have both a north and a south pole.

• One half will have a north pole and the other half will have a south pole.

• The magnetic properties will be lost.

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DOK Level 1: Recall

A circuit has a current of 2A and a resistance of 5Ω. What is the voltage across the circuit?

• 7V

• 10V

• 12V

• 15V

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DOK Level 2: Skill/Concept