Electromagnetism Flashcards
1
Q
When a current flows through a wire what is created?
A
A magnetic field
2
Q
What is a solenoid?
A
A coil of wire
3
Q
What does a solenoid do?
A
increases the strength of the magnetic field that a wire produces
4
Q
What does changing the direction of the current do?
A
changes the direction of the magnetic field
5
Q
What can you add to a solenoid to increase the field strength by even more?
A
adding a block of iron in the centre of the coil
