(a) What are ‘magnetic field lines’? How is the direction of a magnetic field at a point determined ?
(b) Draw two field lines around a bar magnet along its length on its two sides and mark the field directions on them by arrow marks.
Answers
Answer:
(a) The magnetic field lines are the pictorial representation of the strength and direction of the magnetic field.
(a) The magnetic field lines are the pictorial representation of the strength and direction of the magnetic field. The direction of the magnetic field at a point can be found by placing a small magnetic compass at that point. The north end of the needle of a compass indicates the direction of magnetic field at a point where it is placed.
(a) The magnetic field lines are the pictorial representation of the strength and direction of the magnetic field. The direction of the magnetic field at a point can be found by placing a small magnetic compass at that point. The north end of the needle of a compass indicates the direction of magnetic field at a point where it is placed.(b) Magnetic field lines of a bar magnet emerge from the north pole and terminate at the south pole. Inside the magnet, the field lines emerge from the south pole and terminate at the north pole, as shown in the given figure.
Answer:
ANSWER.....
(a) Magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.
(b) The diagram of magnetic field lines around a bar manget is shown.
(c) Characteristics of magnetic field lines are:
1. Magnetic lines of force start from the North Pole and end at the South Pole.
2. They are continuous through the body of magnet
3. Two magnetic lines of force cannot intersect each other.
4. The relative strength of the magnetic field is shown by the degree of closeness of the field lines.
(d) Right hand thumb rule determines the direction of magnetic field associated with a current carrying conductor. It states that imagine that you are holding a current-carrying straight conductor in your right hand such that the thumb points towards the direction of current. Then your fingers will wrap around the conductor in the direction of the field lines of the magnetic field.
