Current Electricity MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The unit of electrical power is the:
A. Watt
B. Ohm
C. Volt
D. Coulomb
Answer: Watt
The total resistance in a series circuit is:
A. The sum of all individual resistances
B. The product of all individual resistances
C. The reciprocal of the sum of the reciprocals of individual resistances
D. None of the above
Answer: The sum of all individual resistances
Ohm’s Law states that:
A. Voltage is equal to current times resistance
B. Resistance is equal to voltage divided by current
C. Current is equal to voltage divided by resistance
D. All of the above
Answer: All of the above
The unit of electrical resistance is the:
A. Ohm
B. Volt
C. Ampere
D. Watt
Answer: Ohm
The electric potential difference between two points is defined as:
A. The work done to move a unit charge from one point to the other
B. The force between two charges at those points
C. The rate of change of voltage with respect to time
D. The resistance between those two points
Answer: The work done to move a unit charge from one point to the other
The electric field inside a perfect conductor is:
A. Zero
B. Equal to the applied voltage
C. Equal to the current density
D. Dependent on the material of the conductor
Answer: Zero
The electric potential at a point in space is:
A. The work done to bring a unit positive charge from infinity to that point
B. The force experienced by a unit positive charge at that point
C. The current through a unit positive charge at that point
D. The rate of change of current with respect to voltage
Answer: The work done to bring a unit positive charge from infinity to that point
The equivalent resistance of a network of resistors can be found using:
A. Ohm's Law
B. Kirchhoff’s Laws
C. The series and parallel rules for resistances
D. All of the above
Answer: All of the above
The electrical energy used by an appliance over a period of time is:
A. Equal to the power multiplied by time
B. Equal to the current multiplied by time
C. Equal to the voltage multiplied by time
D. None of the above
Answer: Equal to the power multiplied by time