Understanding Electricity and Ohm's Law

What is the unit of measurement for voltage?

• Ampere

• Ohm

• Volt

• Watt

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DOK Level 1: Recall

What is the unit of measurement for current?

• Volt

• Ohm

• Ampere

• Joule

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DOK Level 1: Recall

What is the unit of measurement for resistance?

• Volt

• Ohm

• Ampere

• Watt

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DOK Level 1: Recall

According to Ohm's Law, what is the formula to calculate voltage?

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DOK Level 1: Recall

If the current is 2 A and the resistance is 5 Ω, what is the voltage across the circuit?

• 10 V

• 0.4 V

• 2.5 V

• 2 V

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DOK Level 2: Skill/Concept

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

• 3 A

• 16 A

• 8 A

• 48 A

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DOK Level 2: Skill/Concept

What is the primary function of a fuse in an electrical circuit?

• To increase voltage

• To protect the circuit from overcurrent

• To store electrical energy

• To convert AC to DC

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DOK Level 1: Recall

What is the role of a resistor in an electrical circuit?

• To increase current

• To decrease resistance

• To limit the flow of current

• To store charge

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DOK Level 1: Recall

Which of the following describes a closed circuit?

• A circuit with a broken path

• A circuit with an open switch

• A circuit with a complete path for current flow

• A circuit with no power source

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DOK Level 1: Recall

What is the main function of a battery in a circuit?

• To increase resistance

• To provide a source of electrical energy

• To decrease voltage

• To convert electrical energy to light

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DOK Level 1: Recall