The combination of circuit is the utmost important piece of study to understand the basic concept of how exactly current flows in the Electronics circuit because every PCB (Printed Circuit Board) contains multiple of tracks. I am providing you series circuit MCQs multiple choice questions and answers with the aim to facilitate the students, technicians and teachers of different technical fields throughout the world.
Read More: MCQs on Parallel Circuits with Answer Key
Series Circuit – Definition
In a series circuit, the components are connected in such a way that the current flows in a single path that means current first flow through the first component then flow second and again next one.
Series Circuit MCQs (Questions and Answers)
Q1. The total resistance R of a _________ circuit is equal to the sum of the individual resistances.
- Parallel Circuit
- Series Circuit
- Series Parallel Circuit
- all are correct
Answer: b
Q2. The formula of Total Series Resistance is _________________
- Rtotal = R1 + R2 + R3
- Rtotal = R1 ± R2 ± R3
- Rtotal = R1 × R2 × R3
- Rtotal = R1 / R2 × R3
Answer: b
Q3. Three Resistances of R1=20Ω , R2=57Ω & R1=90Ω are is series then how will the total resistance?
- 167Ω
- 90Ω
- 57Ω
- 20Ω
Answer: a
Q4. When current flows through a resistance, electrical energy is converted into ___________ energy.
- Chemical
- Heat
- Light
- Elastic
Answer: b
Q5. Whenever, any machine or device connected with the ground is called______________.
- Grounding
- Earthing
Answer: a
Q6. Electrically isolated means that the infinite resistance between ground point. True/False
Answer: True
Q7. If using double subscript notation, then first letter indicates ________ and the second letter indicate reference.
- Measurement
- Increment
- Subscription
- Solution
Answer: a
Q8. The meaning of troubleshooting in electronics and electrical circuit is _________________.
- Diagnose
- Analyse
- Solution
- all are correct
Answer: d
Q9. When the current path/track damaged (means Zero Current) in a series circuit then it is called _________________.
- Short Circuit
- Open Circuit
- Bypassed Circuit
- All are correct
Answer: b
Q10. The IR voltage across each resistance is called an ___________________.
- IR drop
- Voltage drop
- Power drop
- a & b are correct
Answer: d
Q11. __________states that the sum of all resistor voltage drops in a series circuit equals the applied voltage.
- Ohm’s Law
- Kirchhoff’s voltage law (KVL)
- Kirchhoff’s current law (KCL)
- b & c are correct
Answer: b
Q12. In a _________Circuit, current is Same in the all part/component.
- Series
- Parallel
- String
- a & c are correct
Answer: d
Q13. The formula to calculate Current (I) in Series Resistance Circuit is ___________________.
- I = V/R
- I = I^2 × R
- I = V× R
- I = Vtotal / Rtotal
Answer: d
Q14. When components are connected in successive order is called _______________.
- Series Circuit
- Parallel Circuit
- Series Parallel Circuit
- all are correct
Answer: a
Q15. A combination of _________ resistances is often called string.
- Parallel Circuit
- Series Circuit
- Series Parallel Circuit
- all are correct
Answer: b
Q16. Total voltage (Vtotal) in Series circuit is equal to the sum of individual resistance. True/False
Answer: True
Q17. The total power in a series circuit is the _____________ of individual powers.
- Sum
- Minus
- Divide
- Multiply
Answer: a
Q18. In the series circuit, high value of Resistor dissipates more power rather than low value resistor. True/False
Answer: True
Q19. The formula to calculate the power dissipates against any Resistor is _________________.
- P = W/Q
- P = I^2 × R
- P = VR
- P = IR
Answer: b
Q20. When two applied voltages are connected in series-aiding mode then Vtotal will be sum of all voltages. True/False
Answer: True [Series-Aiding Polarity Mode: when the plus(+) terminal of applied voltage source is connected to the negative(-) terminal of the next applied voltage source]
Q21. When two applied voltages are connected in series-opposing mode then Vtotal will be sum of voltages. True/False
Answer: False [Series-Opposing Polarity Mode: when the plus (+) terminal of applied voltage source is connected to the Plus (+) terminal of the next applied voltage source]
Q22. If two series-opposing voltages are equal then the sum of all voltages will be _______________.
- Infinity
- Zero
- Equal to First Applied Voltage
- Equal to Second Applied Voltage
Answer: b
Q23. The reference point in electronic schematic circuit is know as _____________ which is equal to 0 volts.
- Ground
- GND
- Feedback
- a & b are correct
Answer: d
Q24. The resistance of an open series circuit is _____________.
- High
- Low
- Extremely High (Infinity)
- Extremely Low
Answer: c
Q25. The resistance of the short circuit (comparing to open circuit) is _____________.
- Zero
- Maximum
- Infinity
- Low
Answer: a