Home
Class 9
PHYSICS
A horse shoe magnet has two iron needles...

A horse shoe magnet has two iron needles attached at its ends. Show on a diagram the positions occupied by the needles and name the phenomenon which comes into play.

Text Solution

Verified by Experts

The figure shows the iron needles attached at the ends of a horse shoe magnet. The lower ends of both the needles get attracted towards each other, since they have opposite polarities. The upper ends touching the poles of the magnet, have polarities opposite to that of the magnet. This phenomenon is called magnetic induction
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY AND MAGNETISM

    ICSE|Exercise TOPIC 2 Magnetism (4 Marks Questions )|6 Videos

  • ELECTRICITY AND MAGNETISM

    ICSE|Exercise TOPIC 2 Magnetism (2 Marks Questions )|13 Videos

  • CURRENT ELECTRICITY

    ICSE|Exercise Exercise-9(C ) Multiple choice|2 Videos

  • FLUIDS

    ICSE|Exercise TOPIC 2 (4 Marks Questions ) |16 Videos

Similar Questions

Explore conceptually related problems

Figure shows the section of a semi-circular glass slab having its centre at O. three rays of light A,B and C of the same colour are incident on the slab and strike on the edge XY at the point O. the light ray B suffers refraction along OB'. (a) On the diagram, mark the critical angle by C. (b) The rays enter the slab undeviated. give reason. (c) Draw the path of rays A and C after they strike the edge XY. (d) Name the phenomenon which the rays A and C exhibit.

A rigid massless rod of length 3l has two masses attached at each end as shown in the figure. The rod is pivoted at point P on the horizontal axis (see figuare). When released from initial horizontal position, its instantaneous angular acceleration will be

The figure shows top view of a conducting rob AB, bent to form a semicircle of radius R, carrying current I, placed on a smooth horizontal table. It is subjected to a uniform magnetic field B perpendicular to its plane as shown. The rod is held at rest in its position by two light strings attached to its ends. Calculate the magnetic force acting on the conductor AB and the tension in the strings. Strategy: To find the force conductor, consider a small arc of length dl = Rd theta . This arc can be consider as a straight conductor of length dl.

Name the two parts with which the ear bone stapes is attached at its opposite ends.

A student puts his pencil into an empty trough and observes the pencil from the position as indicated in Figure. (i) What change will be observed in the appearance of the pencil when water is poured into the trough? (ii) Name the phenomenon which accounts for the above stated observation. (iii) Complete the diagram showing how the student's eye sees the pencil through water.

Figure shows a spool with thread wound on it placed on a smooth plane inclined at angle from horizontal. The spool has mass m, edge radius R , and is wound up to a radius r. its moment of inertia about its own axis is I . The free end of the thread is attached as shown in the figure. So that the thread is parallel to the inclined plane. T is the tension in the thread. Which of the following is correct?

The diagram below shows a magnetic needle kept just below the conductor AB which is kept in North South direction. In which direction will the needle deflect when the key is closed ?

A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip ia 40^(@) . Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30^(@) with the magnetic meridian. In this position the needle will dip by an angle

A deflection magnetometer is placed with its arm along the east-west direction (tan A position) and a short bar magnet is placed symmetrically along its axis at some distance with its north pole pointing towards east. In this position the needle of the magnetometer shows a deflection of 60^(@) . If we double the distance of the bar magnet, then the deflection will be

A metal rod of length 'L' and mass 'm' is pivoted at one end. A thin disc of mass 'M' and radius 'R' (ltL) is attached at its center to the free end of the rod. Consider two ways the disc is attached : (case A). The dise is not free to rotate about its centre and (case B) the disc is free to rotate about its centre. The rod disc system perfoms (SHM) in vertical plane after being released from the same displacement position. Which of the following statement (s) is (are) true ? .