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Electric Potential

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Q. What is the electric potential at a point due to a point charge?
  • A. kQ/r
  • B. Q/(4πε₀r²)
  • C. kQ/(4πε₀r)
  • D. Q/(4πr²)
Q. What is the electric potential at a point due to a positive point charge?
  • A. Zero
  • B. Positive
  • C. Negative
  • D. Depends on distance
Q. What is the electric potential at a point in space where the electric field is zero?
  • A. Zero
  • B. Positive
  • C. Negative
  • D. Undefined
Q. What is the electric potential due to a dipole at a point along the axial line at a distance 'r' from the center of the dipole?
  • A. 0
  • B. k * p / r²
  • C. k * p / r
  • D. k * p / 2r
Q. What is the electric potential due to a point charge of 5 μC at a distance of 2 m?
  • A. 0 V
  • B. 2250 V
  • C. 1125 V
  • D. 4500 V
Q. What is the electric potential energy of a charge of 1 C at a point where the electric potential is 10 V?
  • A. 10 J
  • B. 1 J
  • C. 0 J
  • D. 100 J
Q. What is the electric potential energy of a charge of 1 C placed in an electric field of 10 N/C at a distance of 2 m?
  • A. 20 J
  • B. 10 J
  • C. 5 J
  • D. 2 J
Q. What is the electric potential energy of a charge of 1 μC placed in an electric potential of 200 V?
  • A. 0.2 mJ
  • B. 0.1 mJ
  • C. 0.4 mJ
  • D. 0.5 mJ
Q. What is the electric potential energy of a system of two charges +q and -q separated by a distance r?
  • A. 0
  • B. kq²/r
  • C. -kq²/r
  • D. kq/r
Q. What is the electric potential energy of a system of two charges of +2 μC and -2 μC separated by 0.5 m?
  • A. -72 J
  • B. 72 J
  • C. 0 J
  • D. -36 J
Q. What is the electric potential energy of a system of two point charges Q1 and Q2 separated by a distance r?
  • A. kQ1Q2/r
  • B. kQ1Q2/2r
  • C. kQ1Q2/r²
  • D. kQ1Q2
Q. What is the potential at a distance of 1 m from a dipole with a dipole moment of 2 × 10^-9 C·m?
  • A. 0 V
  • B. 1 V
  • C. 2 V
  • D. 4 V
Q. What is the potential difference across a 5 Ω resistor carrying a current of 2 A?
  • A. 10 V
  • B. 5 V
  • C. 2 V
  • D. 0 V
Q. What is the potential difference between two points A and B if the electric field is 5 N/C and the distance between them is 3 m?
  • A. 15 V
  • B. 5 V
  • C. 3 V
  • D. 0 V
Q. What is the potential difference between two points in an electric field if the work done in moving a charge of 3 C from one point to another is 15 J?
  • A. 5 V
  • B. 10 V
  • C. 15 V
  • D. 20 V
Q. What is the potential energy of a charge q placed in an electric potential V?
  • A. qV
  • B. q/V
  • C. V/q
  • D. q²V
Q. What is the potential energy of a system of two point charges +q and -q separated by a distance r?
  • A. 0
  • B. kq²/r
  • C. -kq²/r
  • D. kq/r
Q. What is the relationship between electric field E and electric potential V?
  • A. E = -dV/dx
  • B. E = dV/dx
  • C. E = V/d
  • D. E = -V/d
Q. What is the relationship between electric potential (V) and electric field (E) in a uniform field?
  • A. V = E × d
  • B. V = E/d
  • C. E = V × d
  • D. E = V/d
Q. What is the relationship between electric potential and electric field?
  • A. E = -dV/dx
  • B. E = dV/dx
  • C. E = V/d
  • D. E = -V/d
Q. What is the unit of electric potential?
  • A. Coulomb
  • B. Volt
  • C. Joule
  • D. Newton
Q. What is the work done in moving a charge of 2 μC from a point at 50 V to a point at 100 V?
  • A. 0.1 mJ
  • B. 0.2 mJ
  • C. 0.3 mJ
  • D. 0.4 mJ
Q. What is the work done in moving a charge of 2 μC from a point at 50 V to another at 100 V?
  • A. 100 μJ
  • B. 200 μJ
  • C. 150 μJ
  • D. 50 μJ
Q. Which of the following statements is true about equipotential surfaces?
  • A. They are always parallel to each other
  • B. No work is done moving a charge along them
  • C. They can intersect
  • D. They are always spherical
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Electric Potential MCQ & Objective Questions

Understanding electric potential is crucial for students preparing for school and competitive exams. This concept not only forms the foundation of electrostatics but also plays a significant role in various physics problems. Practicing Electric Potential MCQs and objective questions can enhance your problem-solving skills and boost your confidence, ensuring you score better in exams.

What You Will Practise Here

  • Definition and significance of electric potential
  • Key formulas related to electric potential and potential energy
  • Understanding equipotential surfaces and their properties
  • Calculating electric potential due to point charges and systems of charges
  • Relationship between electric field and electric potential
  • Applications of electric potential in real-world scenarios
  • Diagrams illustrating electric potential concepts

Exam Relevance

The topic of electric potential is frequently tested in CBSE, State Boards, NEET, and JEE exams. Students can expect questions that require them to apply formulas, interpret graphs, and solve numerical problems. Common question patterns include calculating electric potential from given charge distributions and explaining the significance of equipotential surfaces. Mastery of this topic can significantly enhance your performance in both theoretical and practical assessments.

Common Mistakes Students Make

  • Confusing electric potential with electric field strength
  • Neglecting the sign of charges when calculating potential
  • Overlooking the concept of reference points in potential calculations
  • Misinterpreting equipotential surfaces and their implications

FAQs

Question: What is electric potential?
Answer: Electric potential is the amount of work done per unit charge in bringing a charge from infinity to a point in an electric field.

Question: How is electric potential related to electric field?
Answer: Electric potential is the integral of the electric field over distance, indicating how much potential energy a unit charge would have at a point in the field.

Now is the time to enhance your understanding of electric potential! Dive into our practice MCQs and test your knowledge to excel in your exams. Remember, consistent practice with important Electric Potential questions will pave the way for your success!

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