Understanding Electrical Wire Sizing

Olivia is trying to understand the relationship between voltage, current, and resistance in an electric circuit. What is Ohm's Law?

James is setting up a circuit with a current of 3 A and a resistance of 4 Ω. What is the voltage across the circuit?

• 7 V

• 12 V

• 1.33 V

• 0.75 V

Avery is setting up a new lighting system in their garden. What is the formula for calculating voltage drop in the wire used for the lights?

Harper is setting up a small electric circuit in her science project. She uses a wire with a resistance of 0.5 Ω that carries a current of 10 A. What is the voltage drop across the wire?

• 5 V

• 10 V

• 15 V

• 20 V

Benjamin is setting up a new workshop and needs to install a 20 A circuit. Which wire gauge would be most appropriate for this circuit?

• 18 AWG

• 14 AWG

• 12 AWG

• 10 AWG

Nora is working on a science project about electrical circuits. She wants to know: What is the relationship between wire gauge and resistance?

• Larger gauge numbers have lower resistance

• Smaller gauge numbers have higher resistance

• Larger gauge numbers have higher resistance

• Wire gauge does not affect resistance

James is setting up a new electrical circuit in his home. How is power loss in a wire calculated?

Lily is setting up a new lighting system in her room. If a wire carries a current of 5 A and has a resistance of 2 Ω, what is the power loss in the wire?

• 10 W

• 20 W

• 25 W

• 50 W

Elijah is setting up a string of lights for a party. In a series circuit, how does the total resistance compare to the individual resistances?

• Total resistance is the sum of individual resistances

• Total resistance is the product of individual resistances

• Total resistance is the average of individual resistances

• Total resistance is the reciprocal of the sum of reciprocals of individual resistances

Anika is setting up a parallel circuit for her science project. How is the total resistance calculated in her circuit?