Question 1: Two resistors 4Ω and 6Ω are connected in series circuit which is powered by 12 volts power source. What is the voltage across 6Ω resistor?
- 7.2 volts
- 4.8 volts
- 6.8 volts
- 5.2 volts
BASIC
NEC 2023
Resistor Practice Quiz Questions
Free Online Resistor Quiz Questions
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Electrical Practice Questions
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This Resistor Practice Quiz Questions has 11 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.
Tip: Work through Ohm's Law problems on paper — don't just read the answers, calculate them yourself.
- Topics covered: Voltage, current, resistance, Ohm's Law, series/parallel circuits, and electrical safety.
- Passing score: Aim for 90%+ on basic theory — these fundamentals underpin every advanced topic.
- Questions: 11 multiple-choice, one correct answer each
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18 min
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TimeResistor Practice Quiz Questions — Question List
Question 2: A lamp operating at 120 volts has a resistance of 480 ohms. What is the wattage of the lamp?
- 25 Watts
- 30 Watts
- 28 Watts
- 45 Watts
Question 3: A circuit consists of two parallel resistors of each 4 ohms are connected in series with a group of two parallel resistors or 2 ohms respectively. What is the equivalent resistance of the circuit?
- 6 ohms
- 3 ohms
- 12 ohms
- 8 ohms
Question 4: If four 2 ohms resistors are connected in parallel. What is the equivalent resistance of the circuit?
- 4 ohms
- 0.5 ohms
- 2 ohms
- 1 ohm
Question 5: Four resistors of 2, 5, 8 and 9 ohms respectively are connected in series in a circuit. What must be the battery potential to drive 1 ampere current through the circuit.
- 24 volts
- 12 volts
- 20 volts
- 16 volts
Question 6: A 12 volts battery is connected group of four parallel resistors each with 4 ohms. How much current does the circuit draws from the battery?
- 12 amperes
- 18 amperes
- 6 amperes
- 10 amperes
Question 7: A lamp is operating at 120 volts has a resistance 60 ohms. How much current in ampere the lamp does draws?
- 2 ohms
- 0.5 ohms
- 1 ohm
- 4 ohms
Question 8: If two identical resistors are connected in parallel and series combination. What is the ratio between parallel and series combination?
- 1/4
- 4
- 1/2
- 2
Question 9: A 10 meter length of an electrical wire connects the power source and load. Due to fault some part of the wire has damaged and removed and connected back between power source and load. What will be the ampere current flow in the wire?
- increases
- decreases
- remains same.
Question 10: Which of the electrical quantity is same in parallel connection of two wires with different resistance values?
- voltage
- current
- frequency
- power
Question 11: A 40 watt electrical lamp draws 2 amperes current. What is the resistance offered by the lamp?
- 0.25 ohms
- 10 ohms
- 4 ohms
- 1 ohm
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