Current Electricity MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The resistance of a conductor is affected by:
A. Length of the conductor
B. Cross-sectional area
C. Material of the conductor
D. All of the above
Answer: All of the above
The unit of electric power is:
A. Watt
B. Coulomb
C. Farad
D. Henry
Answer: Watt
In a parallel circuit, the voltage across each branch is:
A. Equal to the total voltage
B. Different for each branch
C. Dependent on the resistance of the branch
D. Dependent on the total current
Answer: Equal to the total voltage
The total capacitance of capacitors in series is:
A. Less than the smallest individual capacitance
B. Equal to the sum of the individual capacitances
C. Equal to the smallest individual capacitance
D. The reciprocal of the sum of the reciprocals of the individual capacitances
Answer: The reciprocal of the sum of the reciprocals of the individual capacitances
The unit of electrical current is:
A. Ampere
B. Volt
C. Ohm
D. Watt
Answer: Ampere
Ohm’s law states that the current through a conductor is:
A. Directly proportional to the voltage and inversely proportional to the resistance
B. Directly proportional to the resistance and inversely proportional to the voltage
C. Inversely proportional to both the voltage and resistance
D. Independent of the voltage and resistance
Answer: Directly proportional to the voltage and inversely proportional to the resistance
The electric potential difference across a component is:
A. The work done to move a unit charge
B. The rate of flow of electric charge
C. The resistance offered by the component
D. The energy stored in the component
Answer: The work done to move a unit charge
The power dissipated by a resistor can be calculated using:
A. P = I² × R
B. P = V × I
C. P = V² / R
D. All of the above
Answer: All of the above
In a simple circuit, the total resistance of resistors in series is:
A. The sum of all individual resistances
B. The reciprocal of the sum of the reciprocals of individual resistances
C. The product of all individual resistances
D. None of the above
Answer: The sum of all individual resistances