p7 electromagnetism Flashcards
What is electromagnetism?
Electromagnetism is the branch of physics that deals with the interaction between electric charges and magnetic fields.
True or False: Electromagnetic forces can act over distances.
True
Fill in the blank: The unit of magnetic field strength is _____.
Tesla
What does a solenoid create when an electric current passes through it?
A magnetic field.
Which law states that a current-carrying conductor experiences a force in a magnetic field?
Fleming’s Left-Hand Rule.
Multiple Choice: What is the direction of the magnetic field around a straight current-carrying wire?
It forms concentric circles around the wire.
What is the relationship between current and magnetic field strength in a solenoid?
The magnetic field strength increases with an increase in current.
True or False: The Earth has a magnetic field.
True
Fill in the blank: The device used to measure electric current is called a _____.
Ammeter
What is the right-hand grip rule used for?
To determine the direction of the magnetic field around a current-carrying conductor.
What happens to the magnetic field strength as you move away from a magnet?
It decreases.
Multiple Choice: Which of the following materials is a ferromagnet?
Iron
What is induced magnetism?
When a material becomes magnetized in the presence of a magnetic field.
True or False: All materials can be magnetized.
False
Fill in the blank: Electromagnetic induction is the process of generating an electric current by changing the _____.
Magnetic field
