Free Electrostatics MCQs with Answers
831 Electrostatics MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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Read the Electrostatics notesFree MDCAT chapter notes with key terms831 questions · page 39 of 42
- A. Neither the men who are listed as administrators nor the woman who is also listed has been appointed to the board.
- B. Neither the men who are listed as administrators nor the woman who is also listed have been appointed to the board.
- C. Neither the men who are listed as administrators nor the women who is also listed has being appointed to the board.
- D. Neither the men who is listed as administrators nor has the woman who is also listed been appointed to the board.
Explanation: When the subjects joined by or, nor, either ........ or, neither .........nor are of different persons, verb is placed according to nearer…
Correct answer: Neither the men who are listed as administrators nor the woman who is also listed has been appointed to the board.- A. 132
- B. 130
- C. 134
- D. 136
Explanation: The sequence is 2, 20, 42, 68, 98, ?. Calculate the differences: 20 - 2 = 18, 42 - 20 = 22, 68 - 42 = 26, and 98 - 68 = 30.
Correct answer: 132- A. Pakistan and England
- B. America and Pakistan
- C. Japan and England
- D. America and England
Explanation: The flags are arranged as follows, based on the clues provided:1. 'The flag of America was to the left of Pakistan and to the right of…
Correct answer: Pakistan and England- A. If only I follows
- B. If only II follows
- C. If either I or II follows
- D. If neither I nor II follows
- E. If both I and II follow
Explanation: The statement highlights an epidemic of conjunctivitis, which is typically spread through direct contact rather than through water.
Correct answer: If neither I nor II follows- A. 0.5C
- B. 0.25C
- C. 4C
- D. C
Explanation: C= AEo/d d'=1/2d A=1/2A C=1/2AEo/1/2d C=1/2AEo/1/2d C-AEo/d Unchanged
Correct answer: C- A. Potential difference
- B. Gravitational force
- C. Charge magnitude
- D. Capacitance
- E. None of these
Explanation: The explanation for this question will be added soon.
Correct answer: Potential difference- A. 8 μF
- B. 3/2 μF
- C. 4 μF
- D. 13/2 μF
Explanation: If two capacitors of capacitance 2 μF and 6 μF are connected in parallel, the equivalent capacitance of combination will be the direct sum.
Correct answer: 8 μF- A. Distance between plates
- B. Separation between plates
- C. Medium
- D. Metal of plates
Explanation: Capacitance of a capacitor does not depend upon metal of plates.
Correct answer: Metal of plates- A. E = ½ cv2
- B. E.2cv2
- C. E.cv2
- D. None of these
Explanation: The energy stored in a capacitor can be expressed in three ways: E=((CV)2)/2 where Q is the charge, V is the voltage, and C is the…
Correct answer: E = ½ cv2- A. Capacitor
- B. Conductor
- C. Inductor
- D. Generator
Explanation: The energy stored between the plates of a charged capacitor is electrical potential energy.
Correct answer: Capacitor- A. C1 + C2
- B. 1/C1 + C2
- C. C1C2/C1 + C2
- D. 2C1C2 /C1 + C2
Explanation: When capacitors are connected in parallel, their equivalent capacitance is simply the sum of the individual capacitances.
Correct answer: C1 + C2- A. Coulomb
- B. Volt
- C. Farad
- D. Ampere
Explanation: Capacitance is measured in Farads (F) in the International System of Units (SI).
Correct answer: Farad773. While studying charging and discharging of a capacitor, Rc = Resistance x Capacitance is known as?
- A. Electrostatic constant
- B. Time constant
- C. Dielectric constant
- D. Proportionality constant
Explanation: In the context of charging and discharging a capacitor, the term "Re" stands for the time constant of the circuit, which is calculated by…
Correct answer: Time constant- A. The capacitance falls to half its initial value, and the charge remains the same
- B. Th capacitance and the charge both fall to half their initial values
- C. The capacitance and the charge both double
- D. The capacitance remains the same, and the charge doubles
Explanation: Since the capacitor an its nature is not changed, the capacitance must remain constant.
Correct answer: The capacitance remains the same, and the charge doubles- A. Gauss's law
- B. Newton's law
- C. Ohm's law
- D. Coulomb's law
Explanation: The explanation for this question will be added soon.
Correct answer: Coulomb's law- A. Non-conservative
- B. Conservative
- C. It depends on the shape of the charge
- D. None of these options are correct
Explanation: The electrostatic, or Coulomb's, force is conservative, which means that the work done on q is independent of the path taken.
Correct answer: Conservative- A. Reduces the electrostatic force
- B. Increases the electrostatic force
- C. Does not change electrostatic force
- D. Doubles the electrostatic force
Explanation: Fvacum = 1/4πϵ0 × q1q2/r In presence of dielectricFmedium = 11/4πϵ0ϵr × q1q2/rFmedium= Fvacum/ ϵrThis clearly shows that by putting…
Correct answer: Reduces the electrostatic force- A. 1.6 x 10^-19 C
- B. 9 x 10^9 C
- C. 9.1 x 10^-31 C
- D. 1.6 x 10^-27 C
Explanation: The smallest unit charge is that of the electron or a proton in magnitude i.e. 1.6x10(-19)
Correct answer: 1.6 x 10^-19 C- A. Force per unit mass
- B. Force per unit tesla
- C. Force per unit charge
- D. Force per unit watt
Explanation: A measure of the force exerted by one charged body on another. Imaginary lines of force or electric field lines originate (by convention)…
Correct answer: Force per unit charge- A. E = m*g/ q
- B. E = m*g/ q*v
- C. E = m*g/ q*v*B
- D. E = q / m*g
Explanation: The formula for Electric Field is given by;E = F/qWhere, according to Newton's second law of motion, F = maE = ma/qIn the problem, the…
Correct answer: E = m*g/ q