Electrostatics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
Electrostatics with Specialized Online Physics Exams
Advance your mastery of Electrostatics with targeted online physics exams designed to enhance your preparation. These resources provide an in-depth review of basic physics principles related to electric charges, fields, and potentials. Dive into practice tests and MCQ answers to solidify your understanding of electrostatic phenomena. Focusing on force and motion MDCAT MCQs and other relevant practice questions can significantly boost your performance in this critical area.
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Coulomb’s law is valid only for:
A. Point charges
B. Spherical charges
C. Dipoles
D. Charged rods
Answer: Point charges
Electric field strength is defined as the force per unit:
A. Charge
B. Mass
C. Distance
D. Potential
Answer: Charge
The magnitude of the electric field inside a uniformly charged sphere is:
A. Zero
B. Constant
C. Directly proportional to the radius
D. Inversely proportional to the radius
Answer: Zero
When a charged capacitor is connected to a resistor, the potential difference across the capacitor:
A. Decreases exponentially
B. Increases linearly
C. Stays constant
D. Increases exponentially
Answer: Decreases exponentially
A conductor is in electrostatic equilibrium. The electric field just outside the surface is:
A. Perpendicular to the surface
B. Parallel to the surface
C. Zero
D. Equal to the charge density
Answer: Perpendicular to the surface
The capacitance of a parallel plate capacitor decreases if:
A. The distance between the plates increases
B. The area of the plates increases
C. A dielectric is placed between the plates
D. The charge on the plates increases
Answer: The distance between the plates increases
Two point charges exert a force of 20 N on each other. If the distance between them is doubled, the force becomes:
A. 5 N
B. 10 N
C. 20 N
D. 40 N
Answer: 5 N
The potential energy of a charge in an electric field is defined as:
A. The work done in moving the charge from infinity to a point in the field
B. The energy needed to create the charge
C. The force per unit charge at that point
D. The rate of flow of charge at that point
Answer: The work done in moving the charge from infinity to a point in the field
The dielectric constant of a material is:
A. The ratio of the capacitance of a capacitor with the material as the dielectric to the capacitance with a vacuum as the dielectric
B. The ratio of electric field to the area
C. The ratio of force to the distance between charges
D. The ratio of charge to voltage
Answer: The ratio of the capacitance of a capacitor with the material as the dielectric to the capacitance with a vacuum as the dielectric