What type of questions asked from the lesson of magnetic effect of electric current

For Class 10 CBSE Science, Chapter "Magnetic Effects of Electric Current," here are the types of questions typically asked:

Theory-Based Questions (1-3 marks)

Definition and Basic Concepts:

• Define magnetic field and state its SI unit
• What is electromagnetic induction?
• State Fleming's left-hand rule and right-hand rule
• Define electric motor and electric generator
• What is the principle of an electric motor?

Short Answer Questions:

• Why does a compass needle get deflected when brought near a bar magnet?
• What is the difference between AC and DC?
• Name some sources of direct current and alternating current
• What is meant by overloading of an electrical circuit?

Application-Based Questions (3-5 marks)

Numerical Problems:

• Calculate the resistance of a conductor given voltage and current
• Problems on power calculation using P = VI, P = I²R, P = V²/R
• Questions on domestic electric circuits and electricity bills

Diagram-Based Questions:

• Draw and label the magnetic field lines around a straight current-carrying conductor
• Draw the pattern of magnetic field lines around a bar magnet
• Sketch and explain the working of an electric motor
• Draw a labeled diagram of AC generator

Higher Order Thinking Questions (5 marks)

Analysis and Reasoning:

• Explain why the core of an electromagnet is made of soft iron
• A current-carrying conductor experiences a force in a magnetic field. What are the factors on which this force depends?
• How can the strength of an electromagnet be increased?
• Compare the working of electric motor and electric generator

Case Study Questions:

• Questions based on domestic wiring, safety measures
• Real-life applications of electromagnetic induction
• Energy consumption and conservation in household appliances

Practical-Based Questions

Activity-Related:

• Describe the activity to show magnetic field around a current-carrying straight conductor
• Explain the experiment to demonstrate electromagnetic induction
• Questions on observations from iron filings experiment with bar magnets

Important Topics for Board Exam

High Weightage Areas:

• Fleming's rules (left-hand and right-hand)
• Working of electric motor and generator
• Domestic electric circuits and safety devices
• Magnetic field patterns
• Electromagnetic induction

Common Misconceptions Tested:

• Difference between magnetic field and magnetic field lines
• AC vs DC concepts
• Working principles of motor vs generator
• Series vs parallel connections in domestic circuits