Electrical Concepts Quiz

What is Ohm's Law?

• Ohm's Law only applies to DC circuits and not AC circuits.

• Ohm's Law states that the resistance in a circuit is directly proportional to the voltage.

• Ohm's Law is a mathematical equation used to calculate the power in an electrical circuit.

• Ohm's Law relates current, voltage, and resistance in an electrical circuit.

What are the three components of a circuit?

• resistor, capacitor, inductor

• battery, switch, resistor

• transistor, diode, capacitor

• source, load, wire

What is the unit symbol of electric current?

• V

• Ω

• I

• A

What is the unit of voltage?

• volts

• watts

• amps

• ohms

What is the unit of resistance?

• ampere

• watt

• ohm

• volt

What is the current produced by a voltage of 240 V through a resistance of 0.2 Ω? 

• 12 A
• 24 A
• 240 A
• 1200 A

What voltage is necessary to produce a current of 200 amperes through a resistance of 100 Ω?

• 100 volts
• 20000 volts
• 1000 volts
• 500 volts

What resistance would produce a current of 120 amps from a 6-V battery?

• 0.5 ohms
• 1 ohm
• 10 ohms
• 0.05 ohms

How many paths for current to flow in a series circuit?

• 2
• 3
• 4
• 1

What happens to the other bulbs if one of the bulbs in a series circuit is busted?

• The other bulbs will also go out.
• The other bulbs will get brighter.
• The other bulbs will stay the same.
• The other bulbs will flicker.