MCQ on electricity class 10: Practice For Perfect Score

mcq on electricity class 10

Electricity is a fundamental chapter in Class 10 Science. Understanding this chapter is crucial not only for your board exams but also for laying the groundwork for future studies in physics and engineering. This article provides a comprehensive set of multiple-choice questions (mcq on electricity class 10) to help you master the concepts of electricity. Practice these questions to improve your knowledge and problem-solving skills.

Examples of mcq on electricity class 10

Electric Current and Circuit

  1. What is the SI unit of electric current?
  2. a) Volt
  3. b) Ampere
  4. c) Ohm
  5. d) Coulomb

Answer: b) Ampere

  1. In a circuit, if the resistance is doubled and the voltage remains the same, what happens to the current?
  2. a) It doubles
  3. b) It halves
  4. c) It remains the same
  5. d) It becomes zero

Answer: b) It halves

  1. What is the effect on the current if the voltage in a circuit is tripled and the resistance remains the same?
  2. a) Current remains the same
  3. b) Current triples
  4. c) Current doubles
  5. d) Current halves

Answer: b) Current triples

  1. Which component is used to open or close an electric circuit?
  2. a) Resistor
  3. b) Switch
  4. c) Capacitor
  5. d) Inductor

Answer: b) Switch

  1. In a circuit diagram, a long and a short line represent:
  2. a) Battery
  3. b) Resistor
  4. c) Switch
  5. d) Capacitor

Answer: a) Battery

Electric Potential and Potential Difference

  1. Electric potential difference is measured using a:
  2. a) Voltmeter
  3. b) Ammeter
  4. c) Galvanometer
  5. d) Potentiometer

Answer: a) Voltmeter

What is the potential difference if 10 J of work is done to move 2 C of charge?

  1. a) 20 V
  2. b) 10 V
  3. c) 5 V
  4. d) 2 V

Answer: c) 5 V

If 15 J of work is required to move a charge of 3 C from one point to another, what is the potential difference?

  1. a) 5 V
  2. b) 15 V
  3. c) 45 V
  4. d) 3 V

Answer: a) 5 V

Electric potential difference can be described as:

  1. a) Energy per unit charge
  2. b) Current per unit charge
  3. c) Charge per unit energy
  4. d) Voltage per unit resistance

Answer: a) Energy per unit charge

Ohm’s Law

According to Ohm’s law, the relationship between voltage (V), current (I), and resistance (R) is:

  1. a) V = IR
  2. b) V = I/R
  3. c) V = R/I
  4. d) V = I^2R

Answer: a) V = IR

A resistor has a resistance of 5 ohms. If a current of 2 A flows through it, what is the voltage across the resistor?

  1. a) 10 V
  2. b) 5 V
  3. c) 2.5 V
  4. d) 1 V

Answer: a) 10 V

If the resistance in a circuit is 10 ohms and the voltage is 20 V, what is the current?

  1. a) 0.5 A
  2. b) 2 A
  3. c) 10 A
  4. d) 20 A

Answer: b) 2 A

If the voltage is kept constant and the resistance is increased, what happens to the current?

  1. a) Increases
  2. b) Decreases
  3. c) Remains the same
  4. d) None of these

Answer: b) Decreases

Factors Affecting Resistance

Which of the following does not affect the resistance of a conductor?

  1. a) Material
  2. b) Length
  3. c) Temperature
  4. d) Color

Answer: d) Color

If the length of a conductor is doubled, its resistance:

  1. a) Doubles
  2. b) Halves
  3. c) Remains the same
  4. d) Becomes zero

Answer: a) Doubles

What happens to the resistance of a conductor if its temperature increases?

  1. a) Decreases
  2. b) Increases
  3. c) Remains the same
  4. d) None of these

Answer: b) Increases

Which material is likely to have the lowest resistance?

  1. a) Copper
  2. b) Iron
  3. c) Rubber
  4. d) Wood

Answer: a) Copper

Resistors in Series and Parallel

Three resistors of 2 Ω, 3 Ω, and 6 Ω are connected in parallel. The equivalent resistance is:

  1. a) 1 Ω
  2. b) 2 Ω
  3. c) 3 Ω
  4. d) 11 Ω

Answer: a) 1 Ω

In a series circuit, the total resistance is:

  1. a) Equal to the sum of individual resistances
  2. b) Less than the smallest resistance
  3. c) Greater than the largest resistance
  4. d) None of these

Answer: a) Equal to the sum of individual resistances

Heating Effect of Electric Current

Which of the following is an application of the heating effect of electric current?

  1. a) Electric motor
  2. b) Electric bell
  3. c) Electric heater
  4. d) Electric fan

Answer: c) Electric heater

The heating effect of electric current is given by:

  1. a) H = VIt
  2. b) H = I^2Rt
  3. c) H = IR^2t
  4. d) H = V^2Rt

Answer: b) H = I^2Rt

Electric Power and Energy

Electric power is defined as:

  1. a) The rate at which electric energy is consumed
  2. b) The amount of charge flowing per unit time
  3. c) The product of voltage and current
  4. d) Both a and c

Answer: d) Both a and c

If a device uses 1000 J of energy in 10 seconds, its power is:

  1. a) 100 W
  2. b) 10 W
  3. c) 1000 W
  4. d) 10,000 W

Answer: a) 100 W

Mixed Questions

Which of the following materials is a good conductor of electricity?

  1. a) Rubber
  2. b) Glass
  3. c) Copper
  4. d) Wood

Answer: c) Copper

Which of the following combinations will have the highest total resistance?

  1. a) Two resistors in parallel
  2. b) Two resistors in series
  3. c) Three resistors in parallel
  4. d) Four resistors in series

Answer: d) Four resistors in series

What is the main reason for the heating effect of electric current?

  1. a) Resistance of the conductor
  2. b) Voltage applied
  3. c) Current flowing
  4. d) Length of the conductor

Answer: a) Resistance of the conductor

Which of the following devices uses the heating effect of electric current?

  1. a) Electric fan
  2. b) Electric bulb
  3. c) Transformer
  4. d) Voltmeter

Answer: b) Electric bulb

The device used to measure electric current is:

  1. a) Voltmeter
  2. b) Ammeter
  3. c) Galvanometer
  4. d) Potentiometer

Answer: b) Ammeter

Solving Tips and Strategies

Understanding Question Types

Stand-alone questions: Single concept-based.

Concept-based questions: Require understanding of multiple concepts.

Case-based questions: Based on real-life scenarios.

Time Management

Allocate specific times for each section.

Attempt easier questions first.

Practicing Regularly

Use textbooks, online quizzes, and PDFs.

Consistent practice is key to mastering MCQs.

FAQs

How can I effectively prepare for mcq on electricity class 10?

Practice regularly, understand key concepts, and solve previous years’ questions.

What are the best resources for MCQ practice?

NCERT textbooks, online platforms like BYJU’s, Vedantu, and downloadable PDFs from educational websites.

How do resistors in series and parallel differ in their behavior?

Resistors in series add up their resistances, while resistors in parallel result in a lower equivalent resistance.

Wrapping Up

Mastering mcq on electricity class 10 requires understanding the concepts, consistent practice, and effective time management. Utilize multiple resources, stay focused, and practice regularly to excel in your exams. With dedication and the right approach, you can achieve high scores and build a strong foundation for future studies.