Current Electricity MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The total current in a parallel circuit is:
A. The sum of the currents through each branch
B. The average of the currents through each branch
C. The same as the current through the largest resistor
D. None of the above
Answer: The sum of the currents through each branch
The unit of electrical potential is the:
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: Volt
The energy supplied to a circuit is converted into:
A. Heat
B. Light
C. Mechanical work
D. All of the above
Answer: All of the above
In a series circuit, the total voltage is:
A. The sum of the individual voltages
B. The product of the individual voltages
C. The reciprocal of the sum of the individual voltages
D. The average of the individual voltages
Answer: The sum of the individual voltages
The charge flow per unit time is known as:
A. Current
B. Voltage
C. Resistance
D. Power
Answer: Current
The power dissipated in a resistor is:
A. P = I² × R
B. P = V / R
C. P = R / I
D. P = V × I
Answer: P = I² × R
The total current entering a junction is equal to:
A. The total current leaving the junction
B. The sum of the currents leaving the junction
C. The sum of the voltages around the junction
D. The resistance at the junction
Answer: The sum of the currents leaving the junction
The drift velocity of electrons in a conductor depends on all of the following except:
A. Electric field strength
B. Cross-sectional area of the conductor
C. Length of the conductor
D. Temperature
Answer: Length of the conductor
The equivalent resistance of resistors in parallel 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) / (1 + R3)
Answer: R_eq = 1 / (1/R1 + 1/R2 + 1/R3 + …)