Current Electricity MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The total resistance of resistors in series is:
A. Equal to the sum of the individual resistances
B. The reciprocal of the sum of the reciprocals of the resistances
C. The product of the individual resistances
D. None of the above
Answer: Equal to the sum of the individual resistances
In a circuit with multiple resistors in parallel, the total current is:
A. The sum of the individual currents
B. Equal to the current through the smallest resistor
C. The same as the current through the largest resistor
D. None of the above
Answer: The sum of the individual currents
The total voltage in a series circuit is:
A. The sum of the voltages across each component
B. The product of the voltages across each component
C. The average of the voltages across each component
D. None of the above
Answer: The sum of the voltages across each component
The unit of electrical energy is:
A. Joule
B. Coulomb
C. Volt
D. Watt
Answer: Joule
In a parallel circuit, the voltage across each resistor:
A. Is the same
B. Is different for each resistor
C. Depends on the current through each resistor
D. Depends on the total resistance
Answer: Is the same
The electrical power delivered to a circuit is:
A. P = V × I
B. P = I² × R
C. P = V² / R
D. All of the above
Answer: All of the above
The equivalent resistance of a series circuit with resistors R1, R2, and R3 is:
A. R_eq = R1 + R2 + R3
B. R_eq = 1 / (1/R1 + 1/R2 + 1/R3)
C. R_eq = R1 × R2 × R3
D. R_eq = (R1 + R2) / R3
Answer: R_eq = R1 + R2 + R3
The rate of flow of charge is known as:
A. Current
B. Voltage
C. Resistance
D. Power
Answer: Current
The charge of a capacitor is:
A. Directly proportional to the voltage across it
B. Inversely proportional to the voltage across it
C. Independent of the voltage across it
D. Equal to the current multiplied by time
Answer: Directly proportional to the voltage across it