When _______________ travels through a
conductor, a magnetic field is created
Electric currents produce _____________
In magnets and electromagnets, similar poles attract
In magnets and electromagnets, dissimilar (opposite) poles attract
The object inside a radio that makes a speaker work is called a(n) ______________________
In a battery, electrons collect at the __________________ end of the battery.
Electrons which collect at the negative end of the battery, can flow to the positive end through a ___________________
When the strength of the magnetic field changes, the ________________________between the coil and the permanent magnet changes.
A magnet is defined as
How can the strength of an electromagnet be increased? (mark all that apply)