MCQ Practice – Class 6 to 10

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Quiz – Magnetic Effects of Electric Current

Time: 00:00

Q1. Inside a solenoid, the magnetic field is:

A. Uniform B. Weak C. Zero D. Unstable

Q2. The soft iron core in an electromagnet is used because:

A. It decreases current B. It increases magnetic field C. It stops heat D. It reduces weight

Q3. A DC motor works on the principle of:

A. Magnetic force on a current-carrying conductor B. Chemical reaction C. Dispersion D. Electric heating

Q4. A magnetic field is represented by:

A. Circles only B. Lines of force C. Rays D. Gravitational lines

Q5. A magnetic field around a straight wire forms:

A. Circular loops B. Spiral waves C. Parallel lines D. Straight lines

Q6. Current in a solenoid produces a magnetic field similar to:

A. Bar magnet B. Static charge C. Electric field lines D. No field

Q7. Fleming’s right-hand rule is used for:

A. Batteries B. Heaters C. Generators D. Motors

Q8. A solenoid behaves like a:

A. Electrostatic device B. Motor C. Bar magnet D. Generator

Q9. Which device uses electromagnetic induction?

A. Motor B. Generator C. Bulb D. Heater

Q10. Which rule is used in electric generators?

A. Right-hand rule B. Newton’s law C. Hooke’s law D. Left-hand rule