MCQ Practice – Class 6 to 10

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Quiz – Magnetic Effects of Electric Current

Time: 00:00

Q1. The force on a current-carrying conductor is maximum when angle with field is:

A. 45° B. 180° C. 90° D. 0°

Q2. The coil in a motor is called:

A. Magnet B. Armature C. Solenoid D. Brush

Q3. A DC motor works on the principle of:

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

Q4. A magnetic field around a straight wire forms:

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

Q5. Which electromagnet is strongest?

A. More turns, more current B. Fewer turns, less current C. More turns, no core D. No turns

Q6. A solenoid behaves like a:

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

Q7. Inside a solenoid, the magnetic field is:

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

Q8. A motor converts:

A. Heat to electricity B. Electricity to motion C. Sound to electricity D. Motion to electricity

Q9. Magnetic field around a solenoid resembles:

A. Mirror B. Battery C. Electric coil D. Bar magnet

Q10. In Fleming’s left-hand rule, the thumb represents:

A. Force B. Voltage C. Magnetic field D. Current