Given below is the list of top 20 MCQs on Basic Electrical laws and theorems. Test your basic knowledge of Ohm’s, Kirchhoff’s, Norton, Thevenin, Millman’s theorem, current divider, voltage divider, delta, wye, series, and parallel networks.
Contents
- 1 The correct statement of Ohm’s law
- 2 The voltage divider is applied in
- 3 P = VI is a statement of
- 4 Power dissipated by a 20 Ω resistor connected to 20 V source
- 5 KVL is valid for
- 6 The current divider rule is applied to
- 7 KCL is valid for
- 8 The statement: Energy can neither be created nor destroyed belongs
- 9 A circuit with various parallel voltage sources is solved using
- 10 Norton theorem cannot be applied to
- 11 Norton theorem provides
- 12 The circuit with multiple independent current sources is solved using
- 13 Reciprocity theorem should be applied to
- 14 Delta network is also known as
- 15 Thevenin theorem provides
- 16 Tee network is also known as
- 17 Branch current analysis involves
- 18 Two unequal series sources
- 19 Mesh analysis requires
- 20 Multiple current sources in parallel can be reduced to
The correct statement of Ohm’s law
1. The correct statement of Ohm’s law:
- Voltage is inversely proportional to the power
- Current is inversely proportional to the applied voltage
- Power is a product of resistance times voltage
- Increase in resistance decreases current for constant voltage
Correct answer: 4. Increase in resistance decreases current for constant voltage
The voltage divider is applied in
2. The voltage divider is applied in:
- Parallel circuits
- Series circuits
- None of these
Correct answer: 1. Series circuits
P = VI is a statement of
3. P = VI is a statement of:
- Ohm’s law
- Joule’s law
- KCL
- KVL
Correct answer: 2. Joule’s law
Power dissipated by a 20 Ω resistor connected to 20 V source
4. Power dissipated by a 20 Ω resistor connected to 20 V source:
- 1 watt
- 20 watts
- 400 watts
- 1600 watts
Correct answer: 2. 20 watts
Similar: Most Important MCQs on Basic Electrical Units
Solution: P = V2/R = [20 * 20] / 20 = 20 watts
KVL is valid for
5. KVL is valid for:
- Parallel circuits
- Series circuits
- None of these
Correct answer: 1. Series circuits
The current divider rule is applied to
6. The current divider rule is applied to:
- Parallel circuits
- Series circuits
- None of these
Correct answer: 1. Parallel circuits
Revise 9 Basic Electrical laws and theorems
KCL is valid for
7. KCL is valid for:
- Parallel circuits
- Series circuits
- None of these
Correct answer: 1. Parallel circuits
The statement: Energy can neither be created nor destroyed belongs
8. The statement: Energy can neither be created nor destroyed belongs:
- Kelvin law
- Neil law
- Law of conversation of Energy
- Energy Creation Destruction theory
Correct answer: 3. Law of conversation of energy
A circuit with various parallel voltage sources is solved using
9. A circuit with various parallel voltage sources is solved using:
- Superposition theorem
- Norton theorem
- Kelvin law
- Millman’s theorem
Correct answer: Millman’s theorem
Norton theorem cannot be applied to
10. Norton theorem cannot be applied to:
- Resistor
- Diodes
- Linear bilateral networks
- All of above
Correct answer: 2. Diodes
Norton theorem provides
11. Norton theorem provides:
- Current source with parallel resistor
- Current source with series resistor
- Voltage source with parallel resistor
- Voltage source with series resistor
Correct answer: 1. Current source with parallel resistor
The circuit with multiple independent current sources is solved using
12. The circuit with multiple independent current sources is solved using:
- Kirchhoff’s current law
- Substitution theorem
- Superposition theorem
- Norton theorem
Correct answer: 3. Superposition theorem
Reciprocity theorem should be applied to
13. Reciprocity theorem should be applied to:
- Single source circuits
- Multiple source circuits
- 2, 4, 6, or 8 source
- None of these
Correct answer: 1. Single source circuits
Delta network is also known as
14. Delta network is also known as:
- Tee
- Pi
- Wye
- None
Correct answer: 2. Pi
Thevenin theorem provides
15. Thevenin theorem provides:
- Current source with parallel resistor
- Current source with series resistor
- Voltage source with parallel resistor
- Voltage source with series resistor
Correct answer: 4. Voltage source with series resistor
Tee network is also known as
16. Tee network is also known as:
- Delta
- Pi
- Wye
- None
Correct answer: 3. Wye
Branch current analysis involves
17. Branch current analysis involves:
- KCL
- KVL
- Linear equations
- All of these
- None of these
Correct answer: 4. All of these
Two unequal series sources
18. Two unequal series sources:
- Can be solved using KCL
- Violate KCL
- Follow KVL
- None of these
Correct answer: 2. Violate KCL
Mesh analysis requires
19. Mesh analysis requires:
- KCL only
- KVL only
- Both
- None
Correct answer: 2. KVL only
Multiple current sources in parallel can be reduced to
20. Multiple current sources in parallel can be reduced to:
- Single current source
- Single voltage source
- Single resistance
- None of these
Correct answer: 1. Single current source