Class 10 Science Electricity – Important Questions & Answers

Class 10 Science Electricity – Important Questions & Answers for Class 10 students, prepared by the teachers at Shubham Foundation Classes, Karnal. These important q&a follow the latest CBSE syllabus and NCERT textbook, and cover the points that are most often asked in school tests and board exams. Read the key points below, then download the complete 6-page PDF for free.

Key points: Electricity – Important Questions & Answers

• Ohm’s law: V = IR, at constant temperature.
• Resistance R = ρL/A — it increases with length and decreases with area of cross-section.
• Series: R = R₁ + R₂ + R₃; Parallel: 1/R = 1/R₁ + 1/R₂ + 1/R₃.
• Electric power P = VI = I²R = V²/R; commercial unit of energy is the kilowatt-hour (1 kWh = 3.6 × 10⁶ J).

How to use these notes

1. Read the chapter once in your NCERT textbook.
2. Go through these important q&a and mark anything you find difficult.
3. Solve the textbook exercises, then revise from the notes again before your test.

Stuck on a question? Students of Shubham Foundation Classes can ask their teacher in class, or contact the institute.

Video lessons: Class 10 Science

• Chemical Reactions and Equations – Easy Explanation36:05