What decreases the magnetic field strength in an electromagnet?
Increasing the current
Increasing the voltage
Increasing the wire length
Decreasing the number of wire turns
Decreasing the number of wire turns
Which objects exert forces on each other without contact?
Objects with different densities
Objects with electric charges
Objects with different speeds
Objects with different masses
Objects with electric charges
What is the relationship between magnetism and electricity?
They are related forces.
They are completely separate forces.
They have no relationship.
They are opposite forces.