Electromagnetic Waves
Cards (22)
- What phenomenon does electromagnetism describe?
- How do electric currents affect magnetic fields in wires?
- What shape do the magnetic field lines take around a straight wire?
- Where is the magnetic field strongest around a wire?
- How does the direction of the magnetic field depend on the current's direction?
- What rule helps determine the direction of the magnetic field?
- How do you use the right hand rule to find the magnetic field direction?
- What happens to the magnetic field when current flows upwards in a wire?
- What occurs when two wires with opposite current directions are placed together?
- What shape does the magnetic field take in a flat circular coil?
- What is a solenoid?
- How does the magnetic field behave inside a solenoid?
- How does the magnetic field outside a solenoid compare to that of a bar magnet?
- What do we call a magnet created by electricity?
- What happens to an electromagnet when the current is turned off?
- How can you reverse the direction of an electromagnet's magnetic field?
- What happens to the magnetic field lines when the current direction is flipped?
- What is one way to increase the strength of an electromagnet?
- How does increasing the number of turns in a coil affect its strength?
- What happens if you decrease the length of the coil while keeping turns constant?
- Why does adding an iron core to a solenoid increase its strength?
- What happens to the iron core when the current is turned off?