Magnetic Effects of Electric Current Quiz — 7 Free Questions

Question 1

How many times does the direction of current reverse in one full rotation of a simple AC generator's coil?

Question 2

Outside a bar magnet, in which direction do magnetic field lines point?

Question 3

Where are magnetic field lines closest together (most crowded) around a bar magnet?

Question 4

What determines the direction of an induced current in a conductor?

Question 5

Why should a person switch off the main switch before repairing any electrical fault at home?

Question 6

In Fleming's left-hand rule, the thumb, forefinger, and middle finger are held mutually perpendicular. What does the thumb represent?

Question 7

Which pole of a bar magnet does a magnetic field line finally end at, outside the magnet?

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About Magnetic Effects of Electric Current

This quiz covers Chapter 4 of CBSE Class 10 Physics, Magnetic Effects of Electric Current.

It opens with magnetic fields and field lines around a bar magnet, then covers the magnetic field produced by a current-carrying straight conductor, a circular loop, and a solenoid, along with the right-hand thumb rule.

It then moves to the force on a current-carrying conductor placed in a magnetic field, using Fleming's left-hand rule, and how this force is used inside an electric motor.

The quiz continues with electromagnetic induction, Fleming's right-hand rule, and how an electric generator produces alternating and direct current.

It closes with domestic electric circuits: live, neutral, and earth wires, short circuits, overloading, and the safety devices used to prevent electrical accidents at home.

Every question comes with a clear, simple explanation, so incorrect answers become as instructive as correct ones, whether you are revising for a school test or a board exam.