Question

Consider the following statement:

a) Magnetic field lines are always form closed curve.

b) Magnetic field lines start from north pole outside the magnet

c) Magnetic field lines start from south pole outside the magnet

Which of the following is a property of magnetic field lines?

1. Both a and b are correct
2. Both a and c are correct
3. Only b is correct
4. Only c is correct

Answer 1

Correct Answer - Option 1 : Both a and b are correct

CONCEPT:

Magnetic field lines:

• A magnetic field line is an imaginary line such that tangent to it at any point gives the direction of the magnetic field at that point in space.
• Magnetic field lines are drawn to represent the magnetic fields.
• Magnetic field lines can be drawn with the help of a magnetic compass.

Properties of magnetic field lines:

• Magnetic field lines always form a closed curve.
• Magnetic field lines start from the north pole and end on a south pole outside the magnet.
• No two magnetic field lines ever intersect.

EXPLANATION:

• Magnetic field lines always form a closed curve.
• Magnetic field lines start from the north pole and end on a south pole outside the magnet. Hence, option 1 is correct.