Chapter 24, Problem 49A

(a)

To determine

The poles in the magnet.

Explanation of Solution

Introduction:

A magnet is a substance which attracts other magnetic materials. A magnet has two poles-North pole and south pole. Magnetic field lines emerge from north pole and enter in south pole.

The poles are always at the ends of a magnet. In the given magnet, 2 and 4 represent poles. The magnetic field strength is maximum near the poles and are represented by crowding of the field lines near the ends of a magnet.

(b)

To determine

The north pole of the magnet.

Explanation of Solution

Introduction:

A magnet is a substance which attracts other magnetic materials. A magnet has two poles-North pole and south pole. In the given magnet, 2 and 4 represent poles. The magnetic field strength is maximum near the poles and are represented by crowding of the field lines near the ends of a magnet.

The poles are always at the ends of a magnet. Magnetic field lines emerge from north pole and enter in south pole. So, 2 represents north pole because field lines are emerging from that end.

(c)

To determine

Thesouth pole of the magnet.

Explanation of Solution

Introduction:

A magnet is a substance which attracts other magnetic materials. A magnet has two poles-North pole and south pole. In the given magnet, 2 and 4 represent poles. The magnetic field strength is maximum near the poles and are represented by crowding of the field lines near the ends of a magnet.

The poles are always at the ends of a magnet. Magnetic field lines emerge from north pole and enter in south pole. So, 4 represents south pole because field lines are entering that end.