MDCAT Physics Chapter 6 MCQ Test With Answer (Electrostatics)

Electrostatics is one of the most important chapters in the MDCAT Physics syllabus. This topic deals with the study of electric charges at rest, their properties, and the forces they exert on each other. Every year, several MCQs are asked from this chapter in the MDCAT, making it essential for students to prepare thoroughly.

At TaleemToday.com.pk, we provide MDCAT Physics Chapter-wise MCQ Tests with Answers, helping students evaluate their preparation and strengthen weak areas. This article focuses on Chapter 6: Electrostatics, including important topics, formulas, and a 47-question online test with answers to maximize your preparation.

Importance of Electrostatics in MDCAT Physics

📌 Weightage in MDCAT: Around 4–5 MCQs are usually asked from Electrostatics.
📌 Nature of Questions: A mix of theory-based and numerical MCQs.
📌 Why Important? Because it builds the foundation for current electricity, capacitors, and electromagnetism, which are also part of the MDCAT Physics syllabus.

Students who practice well in Electrostatics not only score higher in MDCAT but also develop a strong base for first-year MBBS/BDS Physics concepts.

MDCAT Physics Chapter 6: Electrostatics – Syllabus Coverage

The UHS-recommended syllabus for Electrostatics includes:

1. Electric Charges
   • Positive and negative charges
   • Charging by conduction and induction
   • Properties of charges
2. Coulomb’s Law
   • Force between two charges
   • Mathematical expression: F = k (q₁q₂ / r²)
   • SI unit of electric force
3. Electric Field
   • Electric field intensity (E = F/q)
   • Electric field lines and properties
   • Field due to a point charge
4. Electric Potential and Potential Difference
   • Work done in moving a charge
   • Relationship between electric field and potential
5. Capacitance and Capacitors (introductory level)
   • Parallel plate capacitor
   • Energy stored in a capacitor
6. Applications of Electrostatics
   • Electrostatic precipitator
   • Photocopier and inkjet printers

Key Formulas of Electrostatics for MDCAT

• Coulomb’s Law:
  F=kq1q2r2F = k \dfrac{q₁ q₂}{r²}F=kr2q1​q2​​
  where k=9×109Nm2/C2k = 9 × 10^9 Nm²/C²k=9×109Nm2/C2
• Electric Field:
  E=FqE = \dfrac{F}{q}E=qF​
• Electric Potential (V):
  V=WqV = \dfrac{W}{q}V=qW​
• Potential due to a Point Charge:
  V=kqrV = k \dfrac{q}{r}V=krq​
• Capacitance of a Parallel Plate Capacitor:
  C=ε0AdC = \dfrac{ε₀ A}{d}C=dε0​A​

Preparation Tips for Electrostatics

✅ Focus on conceptual clarity of Coulomb’s Law, as many numerical MCQs are derived from it.
✅ Revise electric field lines and properties — these are favorite theory-based MCQs.
✅ Memorize formulas with units (N/C, Volt, Coulomb, Farad).
✅ Solve past papers to identify repeated questions.
✅ Attempt chapter-wise online tests to simulate exam conditions.

MDCAT Physics Chapter 6 MCQ Test With Answer (Electrostatics)

Here is a sample of solved MCQs from Chapter 6. The complete online test contains 47 MCQs with answers for students’ practice.

Conceptual MCQs

Q1: The SI unit of electric charge is:
A) Volt
B) Coulomb
C) Farad
D) Newton
Answer: B) Coulomb

Q2: According to Coulomb’s law, the force between two charges is:
A) Directly proportional to distance
B) Inversely proportional to square of distance
C) Directly proportional to mass
D) Independent of distance
Answer: B) Inversely proportional to square of distance

Q3: Electric field is a:
A) Scalar quantity
B) Vector quantity
C) Dimensionless
D) Constant
Answer: B) Vector quantity

Q4: The electric potential at infinity is considered:
A) Zero
B) Infinite
C) Constant
D) Negative
Answer: A) Zero

Q5: Which device works on the principle of electrostatics?
A) Transformer
B) Photocopier
C) Generator
D) Battery
Answer: B) Photocopier

Numerical MCQs

Q6: Two charges +2 μC and –3 μC are placed 2 m apart. Find the force between them. F=kq1q2r2=9×109×(2×10−6)(3×10−6)(2)2F = k \dfrac{q₁ q₂}{r²} = 9 × 10^9 × \dfrac{(2×10^{-6})(3×10^{-6})}{(2)^2}F=kr2q1​q2​​=9×109×(2)2(2×10−6)(3×10−6)​

A) 9 N
B) 12 N
C) 13.5 N
D) 15 N
Answer: C) 13.5 N

Q7: A point charge of +4 μC produces an electric field of 3600 N/C at a certain point. Find the distance of that point from the charge. E=kqr2⇒r=kqEE = k \dfrac{q}{r²} \quad ⇒ \quad r = \sqrt{\dfrac{kq}{E}}E=kr2q​⇒r=Ekq​​

A) 10 m
B) 5 m
C) 3 m
D) 2 m
Answer: B) 10 m

Q8: The potential at a distance of 0.5 m from a +2 μC charge is: V=kqrV = k \dfrac{q}{r}V=krq​

A) 2 × 10⁴ V
B) 3 × 10⁴ V
C) 4 × 10⁴ V
D) 5 × 10⁴ V
Answer: C) 4 × 10⁴ V

Q9: A parallel plate capacitor has plate area 2 m² and separation 0.01 m. If ε₀ = 8.85 × 10⁻¹² F/m, find capacitance. C=ε0AdC = \dfrac{ε₀ A}{d}C=dε0​A​

A) 1.77 × 10⁻⁹ F
B) 2 × 10⁻¹¹ F
C) 1.5 × 10⁻⁸ F
D) 2.5 × 10⁻⁹ F
Answer: A) 1.77 × 10⁻⁹ F

Q10: Work done in moving a charge of 2 C through a potential difference of 12 V is: W=qVW = qVW=qV

A) 10 J
B) 12 J
C) 24 J
D) 36 J
Answer: C) 24 J

Benefits of Practicing MDCAT Electrostatics MCQs

• ✅ Strengthens conceptual and numerical understanding
• ✅ Helps students identify weak areas in preparation
• ✅ Improves speed and accuracy in solving Physics questions
• ✅ Ensures complete coverage of MDCAT Physics syllabus

Final Words

Electrostatics (Chapter 6 of Physics) is one of the most vital topics in the MDCAT exam. With concepts ranging from Coulomb’s Law to Electric Potential and Capacitance, it is both conceptual and numerical in nature. By practicing the 47 MCQs with answers available on our platform, students can master this chapter and gain confidence for the final exam.