How does a magnetic needle behave if it is freely suspended?

How does a magnetic needle behave if it is freely suspended?

When a Magnetic needle is suspended freely, it always aligns itself in the direction of the magnetic north-pole and south-pole of the earth, the north pole of the needle gets attracted towards the magnetic south pole of the earth and the south gets repelled equally away from it.

What is the net force on a compass needle in a uniform magnetic field?

A MAGNETISED NEEDLE IN A UNIFORM MAGNETIC FIELD EXPERIENCES A TORQUE BUT NO NET FORCE. HOWEVER, AN IRON NAIL NEAR A BAR MAGNET EXPERIENCES A FORCE OF ATTRACTION IN ADDITION TO TORQUE.

What is force in a bar magnet suspended freely?

Explanation: When a bar magnet is suspended freely in a uniform magnetic field, The magnet experiences only couple and undergoes only rotatory motion experience any force.

What happens when a magnetic needle is kept in a uniform magnetic field?

A magnetic needle kept in uniform magnetic field experiences only torque as forces cancel each other as at both the poles forces are same but opposite directions.

Why does magnet always point to north?

The north pole of a compass magnet points toward the north. Earth’s south magnetic pole is near Earth’s geographic north. Earth’s magnetic north pole is near Earth’s geographic south. That’s why the north pole of a compass points toward north because that’s where Earth’s south magnetic pole is located and they attract.

Where is angle of dip 90?

poles
The angle of dip is 90° at poles. The magnetic lines of forces are perpendicular to the surface at the poles.

Does a small bar magnet experience a net force in an external uniform magnetic field does it experience a torque?

A magnetised needle in uniform magnetic field experiences a torque but no net force. An iron nail near a bar magnet, however, experiences a force of attraction in addition to a torque.

Why freely suspended bar magnet experiences torque?

Answer Expert Verified In a uniform magnetic field, the two poles of the magnetic needle experience equal and opposite forces. In other words, the force at one end nullifies the force at the other end. Hence, the needle experience only the torque due to the magnetic field and there is no force.

What happens to the force between magnetic pole?

Force decreases to half-the previous value.

Does a magnetic needle have a force on it?

A MAGNETISED NEEDLE IN A UNIFORM MAGNETIC FIELD EXPERIENCES A TORQUE BUT NO NET FORCE. HOWEVER, AN IRON NAIL NEAR A BAR MAGNET EXPERIENCES A FORCE OF ATTRACTION IN ADDITION TO TORQUE. EXPLAIN A magnetic needle is fixed at a particular point so it can only rotate about its hinged point due to torque as you said earlier,.

How do you find the torque on a magnetic loop?

The Torque on a Current Loop A uniform magnetic field exerts no net force on a current loop but it does exert a net torque. Let’s say the magnetic field is in the plane of the loop and is parallel to two sides. If the loop has a width a, a height b, and a current I, then the force on each of the left and right sides is F = IbB.

What is the difference between a uniform and non-uniform magnetic field?

Sign up for Ahrefs Webmaster Tools. In a uniform magnetic field the needle will experience only a torque. The two ends will experience equal and opposite forces that will align it with the field. In a non-uniform field the needle will experience not only the torque but also a small net force toward the stronger region of the field.

How does a uniform magnetic field exert force on a current loop?

A uniform magnetic field exerts no net force on a current loop but it does exert a net torque. Let’s say the magnetic field is in the plane of the loop and is parallel to two sides.