?
Categories
Account

Electricity & Magnetism

Download Q&A
Q. A capacitor of capacitance 10 microfarads is charged to a voltage of 5 volts. What is the charge stored in the capacitor?
  • A. 50 microcoulombs
  • B. 5 microcoulombs
  • C. 0.5 microcoulombs
  • D. 100 microcoulombs
Q. A capacitor of capacitance 5 µF is charged to a voltage of 10V. What is the charge stored in the capacitor? (2022)
  • A. 50 µC
  • B. 100 µC
  • C. 500 µC
  • D. 1000 µC
Q. A capacitor stores 5 microfarads of charge at a voltage of 10 volts. What is the energy stored in the capacitor?
  • A. 0.25 mJ
  • B. 0.5 mJ
  • C. 0.75 mJ
  • D. 1 mJ
Q. A capacitor stores energy in the form of which type of field?
  • A. Electric field
  • B. Magnetic field
  • C. Gravitational field
  • D. Electromagnetic field
Q. If a 10 ohm resistor is connected to a 5V battery, what is the current flowing through the resistor? (2020)
  • A. 0.5 A
  • B. 1 A
  • C. 2 A
  • D. 5 A
Q. If a 12 V battery is connected to a resistor of 4 ohms, what is the current flowing through the circuit?
  • A. 3 A
  • B. 4 A
  • C. 12 A
  • D. 0.33 A
Q. If a circuit has a resistance of 5 ohms and a current of 2 amperes, what is the voltage across the circuit?
  • A. 10 V
  • B. 5 V
  • C. 2 V
  • D. 1 V
Q. If a wire carries a current of 3 A and has a resistance of 2 ohms, what is the power dissipated in the wire?
  • A. 6 W
  • B. 9 W
  • C. 12 W
  • D. 15 W
Q. If a wire carries a current of 4 A and has a resistance of 2 ohms, what is the power dissipated in the wire?
  • A. 8 W
  • B. 16 W
  • C. 4 W
  • D. 2 W
Q. If the frequency of an AC circuit is doubled, what happens to the inductive reactance?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the frequency of an AC signal is doubled, what happens to its period?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the resistance of a conductor is doubled, what happens to the current if the voltage remains constant? (2020)
  • A. Doubles
  • B. Halves
  • C. Remains the same
  • D. Increases four times
Q. If the resistance of a wire is 10 ohms and the voltage across it is 20 volts, what is the current flowing through the wire?
  • A. 2 A
  • B. 5 A
  • C. 10 A
  • D. 20 A
Q. If the resistance of a wire is doubled, what happens to the current if the voltage remains constant? (2021)
  • A. Doubles
  • B. Halves
  • C. Remains the same
  • D. Increases
Q. If the voltage across a resistor is doubled, what happens to the power consumed by the resistor? (2020)
  • A. It halves
  • B. It doubles
  • C. It quadruples
  • D. It remains the same
Q. In a magnetic field, the direction of the magnetic force on a charged particle is given by which rule?
  • A. Right-hand rule
  • B. Left-hand rule
  • C. Fleming's right-hand rule
  • D. Fleming's left-hand rule
Q. In a parallel circuit with two resistors of 6 ohms and 3 ohms, what is the total resistance?
  • A. 2 ohms
  • B. 4 ohms
  • C. 1.5 ohms
  • D. 9 ohms
Q. In a parallel circuit, if one resistor fails, what happens to the rest of the circuit? (2022)
  • A. All resistors fail
  • B. Current stops flowing
  • C. The circuit remains functional
  • D. Voltage drops to zero
Q. In a parallel circuit, if one resistor fails, what happens to the total resistance? (2020)
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes infinite
Q. In a series circuit with a 12 V battery and two resistors of 4 Ω and 8 Ω, what is the current flowing through the circuit?
  • A. 0.5 A
  • B. 1 A
  • C. 1.5 A
  • D. 2 A
Q. What happens to the total current in a parallel circuit if more branches are added? (2023)
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. What is the direction of the magnetic field around a current-carrying conductor? (2019)
  • A. From North to South
  • B. From South to North
  • C. Clockwise
  • D. Counterclockwise
Q. What is the equivalent resistance of two resistors of 4 ohms and 6 ohms connected in series?
  • A. 10 ohms
  • B. 24 ohms
  • C. 2.4 ohms
  • D. 0.67 ohms
Q. What is the equivalent resistance of two resistors of 4 ohms and 6 ohms in series?
  • A. 10 ohms
  • B. 24 ohms
  • C. 2.4 ohms
  • D. 0.67 ohms
Q. What is the equivalent resistance of two resistors, R1 = 4Ω and R2 = 6Ω, in parallel? (2022)
  • A. 2.4Ω
  • B. 10Ω
  • C. 24Ω
  • D. 1.5Ω
Q. What is the equivalent resistance of two resistors, R1 and R2, in parallel? (2022)
  • A. R1 + R2
  • B. R1 * R2 / (R1 + R2)
  • C. 1 / (1/R1 + 1/R2)
  • D. R1 - R2
Q. What is the formula for calculating electric power? (2023)
  • A. P = IV
  • B. P = I^2R
  • C. P = V^2/R
  • D. All of the above
Q. What is the formula for calculating the capacitance of a parallel plate capacitor?
  • A. C = εA/d
  • B. C = A/εd
  • C. C = d/εA
  • D. C = εd/A
Q. What is the formula for calculating the power consumed in an electrical circuit?
  • A. P = IV
  • B. P = I/R
  • C. P = V/R
  • D. P = IR
Q. What is the formula for the capacitance of a parallel plate capacitor?
  • A. C = εA/d
  • B. C = A/εd
  • C. C = d/εA
  • D. C = εd/A
Showing 1 to 30 of 54 (2 Pages)

Electricity & Magnetism MCQ & Objective Questions

Understanding Electricity & Magnetism is crucial for students preparing for school and competitive exams in India. This topic not only forms a significant part of the curriculum but also helps in building a strong foundation in physics. Practicing MCQs and objective questions enhances your exam preparation, allowing you to tackle important questions with confidence and improve your overall scores.

What You Will Practise Here

  • Fundamental concepts of electric charge and electric field
  • Ohm's Law and its applications in circuit analysis
  • Magnetic fields and their relation to electric currents
  • Electromagnetic induction and Faraday's Law
  • Capacitance, inductance, and their formulas
  • Key definitions such as voltage, current, and resistance
  • Diagrams illustrating circuit components and magnetic fields

Exam Relevance

The topic of Electricity & Magnetism is frequently tested in CBSE, State Boards, NEET, and JEE exams. Students can expect questions that range from theoretical concepts to numerical problems. Common question patterns include direct application of formulas, conceptual understanding of laws, and problem-solving based on circuit diagrams. Mastering this topic can significantly boost your performance in these competitive assessments.

Common Mistakes Students Make

  • Confusing the direction of electric current and conventional current
  • Misapplying Ohm's Law in complex circuits
  • Overlooking the significance of units in calculations
  • Failing to understand the relationship between electricity and magnetism
  • Neglecting to practice diagram-based questions

FAQs

Question: What are the key formulas I should remember for Electricity & Magnetism?
Answer: Important formulas include Ohm's Law (V = IR), the formula for capacitance (C = Q/V), and Faraday's Law of electromagnetic induction (ε = -dΦ/dt).

Question: How can I improve my understanding of this topic?
Answer: Regular practice of MCQs and solving previous years' question papers will enhance your grasp of concepts and improve your speed in answering questions.

Take charge of your exam preparation by solving Electricity & Magnetism MCQ questions today! Test your understanding and ensure you are well-prepared for your upcoming exams.

Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks