Basic Electrical Laws and Theorems MCQs
1. The correct statement of Ohm’s law________
A. Voltage is inversely proportional to the power
B. Current is inversely proportional to the applied voltage
C. Power is a product of resistance times voltage
D. Increase in resistance decreases current for constant voltage
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2. The voltage divider is applied in_____________
A. Parallel circuits
B. Series circuits
C. None of these
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3. The correct statement of Ohm’s law________
A. V = IR
B. V = R/I
C. V = I2R
D. V = IR2
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4. A 20 Amps current source is connected to two parallel resistors having resistances (5 and 15 ohms respectively), the current across 15 ohms resistance is__________
A. 5 Amps
B. 10 Amps
C. 15 Amps
D. 20 Amps
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5. P = VI is a statement of______
A. Ohm’s law
B. Joule’s law
C. KCL
D. KVL
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6. Power dissipated by a 20 Ω resistor connected to 20 V source_______
A. 1 watt
B. 20 watts
C. 400 watts
D. 1600 watts
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7. A 12 V DC battery powers two series resistors: 1 kΩ and 3 kΩ. The voltage drop across 3 kΩ resistor is_______
A. 3 V
B. 6 V
C. 9 V
D. 12 V
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8. KVL is valid for________
A. Parallel circuits
B. Series circuits
C. None of these
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9. The current divider rule is applied to______
A. Parallel circuits
B. Series circuits
C. None of these
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10. Any linear bilateral network can be reduced to a voltage source and a series resistor by using_______
A. Norton theorem
B. Thevenin theorem
C. Superposition theorem
D. Maximum power transfer theorem
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11. KCL is valid for______
A. Parallel circuits
B. Series circuits
C. None of these
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12. The statement: Energy can neither be created nor destroyed belongs______
A. Kelvin law
B. Neil law
C. Law of conversation of Energy
D. Energy Creation Destruction theory
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13. Any linear bilateral network can be reduced to a current source and a shunt resistor by using________
A. Norton theorem
B. Thevenin theorem
C. Superposition theorem
D. Maximum power transfer theorem
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14. A circuit with various parallel voltage sources is solved using_________
A. Superposition theorem
B. Norton theorem
C. Kelvin law
D. Millman’s theorem
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15. Norton theorem cannot be applied to_______
A. Resistor
B. Diodes
C. Linear bilateral networks
D. All of above
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16. Norton theorem provides_________
A. Current source with parallel resistor
B. Current source with series resistor
C. Voltage source with parallel resistor
D. Voltage source with series resistor
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17. The circuit with multiple independent current sources is solved using_____
A. Kirchhoff’s current law
B. Substitution theorem
C. Superposition theorem
D. Norton theorem
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18. Reciprocity theorem should be applied to_________
A. Single source circuits
B. Multiple source circuits
C. 2, 4, 6, or 8 source
D. None of these
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19. Delta network is also known as_________
A. Tee
B. Pi
C. Wye
D. None
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20. Thevenin theorem provides_________
A. Current source with parallel resistor
B. Current source with series resistor
C. Voltage source with parallel resistor
D. Voltage source with series resistor
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21. Tee network is also known as___________
A. Delta
B. Pi
C. Wye
D. None
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22. Branch current analysis involves_________
A. KCL
B. KVL
C. Linear equations
D. All of these
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23. Two unequal series sources_________
A. Can be solved using KCL
B. Violate KCL
C. Follow KVL
D. None of these
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24. Mesh analysis requires________
A. KCL only
B. KVL only
C. Both
D. None
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25. Multiple current sources in parallel can be reduced to________
A. Single current source
B. Single voltage source
C. Single resistance
D. None of these
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