A compass, because the magnet's North pole will rotate until it points to the Earth's North pole.
When the magnet is free to rotate and its poles are in a horizontal plane, it comes to rest with its poles pointing roughly north and south.
A magnet will rotate when it is placed in a magnetic field that exerts a torque on it. If the magnet is free to move, the torque causes it to align with the magnetic field lines, causing the magnet to spin until it reaches equilibrium. This rotation can also be influenced by external forces or mechanical systems, such as in electric motors, where the interaction between magnetic fields generates continuous rotation.
by keeping another magnet or attractive force
To make an electromagnet rotate, you can place it in the proximity of a permanent magnet. When a current flows through the electromagnet, it interacts with the magnetic field of the permanent magnet, causing the electromagnet to rotate. This setup can be used in devices like electric motors and generators.
A magnet that becomes energised when an electric current is passed through it.
When you rub a magnet with metal, the metal object becomes temporarily magnetized. This happens because the atoms in the metal align with the magnetic field of the magnet. However, once the magnet is removed, the metal object loses its magnetism.
You can hang the magnet up on a string, so that it can rotate freely. In that case, it should align with the Earth's magnetic field.
No.The part of the magnet where there is the strongest pull or attraction are called the poles of the magnet.
A suspended magnet is usually a magnet suspended by a thin thread and allowed to rotate and swing freely. This will align itself to the Earth's magnetic field providing there is no other magnetic or electromagnetic influnence.
Yes, a bar magnet can exert a torque on itself due to its own magnetic field. This torque can cause the magnet to align itself in a specific orientation, depending on the interaction between its north and south poles. If the magnet is not free to rotate, this torque can manifest itself as a force causing the magnet to move.
by burning the fuel to heat water to make steam to turn a turbine to rotate a magnet about a coil (or a coil about a magnet) to make electricity.
Just get a fairly strong magnet, I used a cow magnet. Wrap the magnet in a cloth so as not to scratch the face of the panel. Place the magnet over the needle and rotate it counter clockwise. If the magnet is strong enough the needle will return to its proper position.