Yes.
Yes.
Yes.
Yes.
A compass needle will align itself with a magnetic field. It will want to lie along the magnetic field lines, or lie parallel to the lines of force of the magnetic field it is interacting with.
Main similarity: Like charges repel each other, different charges attract each other.Main difference: Magnetic "charges" can't be separated. At least, so far it has not been achieved.
A compass.A compass.A compass.A compass.
No, convection currents can vary in strength and direction depending on factors such as temperature gradients, fluid properties, and boundary conditions. In general, convection currents result from the movement of fluids due to differences in temperature, but the specific behavior can be influenced by a variety of factors.
not always as the south pole of a magnet is magnetic yet it repels another south pole. :D
Moving electrons always have a magnetic field around them
In the absence of interference from other magnetic fields or currents, a compass needle will align itself with the Earth's magnetic field and point towards the magnetic North Pole. However, it may not always point directly northward due to local magnetic anomalies or declination.
A magnetic field is always associated with a moving charge. So, if current is there, it must be showing the magnetic effects though these are too small of daily relevance..
Magnetism, an aspect of electromagnetism, one of the fundamental forces of nature. Objects such as a bar magnet can influence other magnetic materials, without physically connecting them, because magnetic objects produce a magnetic field. Magnetic fields are usually represented by magnetic flux lines. Magnetic fields influence magnetic materials and also influence charged particles that move through the magnetic field.
Electromagnets only have a magnetic field when electrical current if flowing through them. When the power if off, so is the magnetic field. A bar magnet ALWAYS has a magnetic field.
yes. electric current low always generates a magnetic field.
Whether or not you use it, there's always a magnetic field surrounding an electric current.When anything that can respond to a magnetic force is brought close enough to the current,it does feel a magnetic force.
Question is confused, but try this... The brain does generate electrical fields, and they do change, and since changing electrical fields always generate magnetic fields ... then YES. However ... the electrical fields of the brain are of very low magnitude and are relatively slow to change (as compared to any manufactured gadget), so the brains magnetic fields are weak and are considered minor The electric field is the source code for EEG's.
No
No, the magnetic pole is always on the move, which is why the magnetic variation is often printed on maps.
yes they are
An electric current will always be surrounded by a magnetic field. The reason for the relationship is not exactly obvious; it has been explained by Albert Einstein in his paper "On the electrodynamics of moving bodies".