Class 10 Science Chapter 12: Magnetic Effects of Electric Current — MCQ Important Questions
Practice Magnetic Effects of Electric Current MCQ important questions and mock-test sets for CBSE revision.
Topic-wise important and practice questions
Review question distribution across chapter topics for MCQs.
| Topic | MCQ |
|---|---|
| Field-Line Density and Magnetic Field Strength | 4 |
| Force on a Current-Carrying Conductor in a Magnetic Field | 3 |
| Domestic Supply: Live and Neutral Wires | 3 |
| Effect of Number of Turns in a Circular Coil | 3 |
| Field Around a Straight Current-Carrying Conductor | 4 |
| Magnetic Field and Compass Needle | 4 |
| Overloading of Domestic Circuits | 4 |
| Short-Circuiting in Domestic Circuits | 3 |
| Effect of Distance on Straight-Wire Magnetic Field | 3 |
| Non-Intersection of Magnetic Field Lines | 3 |
| Parallel Connection of Domestic Appliances | 4 |
| Domestic Circuit Ratings: 5 A and 15 A | 3 |
| Effect of Current on Straight-Wire Magnetic Field | 3 |
| Magnetic Field of a Circular Current-Carrying Loop | 3 |
| Magnetism in Medicine and MRI Context | 4 |
| Earth Wire and Safety of Metallic Appliances | 5 |
| Fleming's Left-Hand Rule | 5 |
| Magnetic Field Lines and Their Direction | 3 |
| Maximum Magnetic Force at Right Angles | 4 |
| Reversal of Current and Magnetic Field Direction | 4 |
| Solenoid and Its Magnetic Field | 4 |
| Electromagnet Using a Soft-Iron Core | 4 |
| Fuse and Protection Against Excess Current | 4 |
| Motion of Charged Particles in a Magnetic Field | 4 |
| Oersted Experiment and Magnetic Effect of Current | 4 |
| Reversal of Current or Field and Force Direction | 4 |
| Right-Hand Thumb Rule | 4 |
MCQ Preparation & Exam Strategy
Multiple Choice Questions (MCQs) for Class 10 Science Magnetic Effects of Electric Current test conceptual clarity, quick elimination of distractors, and rapid application of fundamental definitions.
- Read each question stem carefully before glancing at options to avoid falling for tempting distractors.
- Use the elimination strategy: immediately rule out options that violate core scientific or mathematical rules.
- Watch out for qualifiers like "always", "never", "except", and "not true".
- Review the explanation after each question to reinforce foundational concepts for CBSE examinations.
Sample Questions
Q1. Which of the following statements best describes the primary concept in Magnetic Effects of Electric Current?
- It follows the standard conservation laws outlined in the NCERT syllabus.
- It applies only under non-standard laboratory conditions.
- It contradicts foundational principles established in earlier chapters.
- It depends entirely on external pressure without physical basis.
Correct Answer: It follows the standard conservation laws outlined in the NCERT syllabus.
Explanation: Under CBSE and NCERT guidelines, fundamental principles in Magnetic Effects of Electric Current strictly adhere to standard conservation and governing laws.
Q2. In the study of Magnetic Effects of Electric Current, identifying key variables is critical because:
- Variables help determine the systematic outcome and relationship between quantities.
- Formulas cannot be written without arbitrary assumptions.
- Examiners only award marks for memorized tables.
- Units cancel out automatically in every scenario.
Correct Answer: Variables help determine the systematic outcome and relationship between quantities.
Explanation: Establishing independent and dependent variables is the standard scientific methodology for analyzing concepts in this chapter.
Q3. What is the standard approach to solving numerical problems related to Magnetic Effects of Electric Current?
- Write given values with units, state the relevant formula, and calculate step-by-step.
- Estimate the final figure directly without intermediate calculations.
- Ignore unit conversions between standard and derived units.
- Rely solely on previous year question choices.
Correct Answer: Write given values with units, state the relevant formula, and calculate step-by-step.
Explanation: Step-by-step calculation with units ensures full credit according to CBSE marking schemes.