Chapter 13: Magnetic Effects of Electric Current- Exercise- 3

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Chapter 13: Magnetic Effects of Electric Current

Class: X

Exercise 3

Question 1

Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.

Answer 1

In the figure given below, we can see the magnetic field lines. Right- hand thumb rule tells us that; -

1.Inside the loop, the magnetic field lines are directed perpendicular to the plane of paper in the inward direction.

2.Outside the loop magnetic field lines are directed out of the plane of paper.

 

 

 

Fig. Magnetic Field lines of the field produced by current carrying circular loop

Question 2

The magnetic field in a given region is uniform. Draw a diagram to represent it.

Answer 2

The uniform magnetic field in a region is represented by equidistant, parallel lines of equal length. The Figure below represents uniform magnetic field

 

Question 3

Choose the correct option.

1. The magnetic field inside a long straight solenoid-carrying current is zero.
2. Decreases as we move towards its end.
3. Increases as we move towards its end.
4. Is the same at all points,

Answer 3

4. Is the same at all points.