COMSATS Physics — Electrostatics
Electrostatics is part of the Physics section of the NTS NAT-IE test COMSATS admits on (10 of the 90 MCQs). It breaks into 2 subtopics, and we hold 18 NAT-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (2)
How Electrostatics is tested
Across the 7 NAT-pattern papers on ParhaiKrlo, Electrostatics accounts for 3 questions. It appears in 3 of them, about 1 questions a paper. The heaviest was COMSATS Past Paper 07, with 1 question.
| Paper | Questions |
|---|---|
| COMSATS Past Paper 07 | 1 |
| COMSATS Past Paper 04 | 1 |
| COMSATS Past Paper 01 | 1 |
Electrostatics MCQs from the NAT-pattern papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · COMSATS Past Paper 07 · Electrostatics
When capacitors are connected in parallel, their total capacitance is:
- A.the product of the capacitances
- B.the sum of the individual capacitances
- C.equal to the smallest capacitance
- D.the reciprocal of the sum of reciprocals
Show answer
Answer: B. the sum of the individual capacitances — C = C₁ + C₂ + … in parallel.
- Q2 · COMSATS Past Paper 04 · Electrostatics
A 2 μF capacitor is charged to a potential difference of 10 V. How much charge does it store?
- A.12 μC
- B.0.2 μC
- C.5 μC
- D.20 μC
Show answer
Answer: D. 20 μC — Q = CV = 2 μF × 10 V = 20 μC.
- Q3 · COMSATS Past Paper 01 · Electrostatics
If the distance between two point charges is doubled, the electric force between them becomes:
- A.one-fourth
- B.half
- C.double
- D.four times
Show answer
Answer: A. one-fourth — F ∝ 1/r²; doubling r multiplies F by 1/4.