A: A magnetic field can pass through non-magnetic materials and vacuum.
Q: How is the intensity of a magnetic field indicated?
A: The intensity of a magnetic field is indicated by the lines of force.
Q: What is the real test of a magnet?
A: The real test of a magnet is its ability to attract iron or steel objects.
Q: Which magnetic poles attract each other ?
A: Opposite magnetic poles attract each other. This means the north pole of one magnet attracts the south pole of another magnet, and vice versa.
Q: Is magnetic force a vector or a scalar quantity ?
A: Magnetic force is a vector quantity. This means that it has both magnitude and direction.
Q: What is an electromagnet ?
A: An electromagnet is a magnet created by electric current flowing through wire coils. An electric current flows through it and it becomes magnetic.
