Electromagnetism Flashcards
1
Q
How is an electromagnet constructed?
A
An electromagnet is constructed by wrapping a coil of wire around an iron core and passing an electric current through the coil. The coil becomes magnetized, and the iron core enhances the magnetic field, making it a powerful electromagnet.
1
Q
What does an electric current in a conductor produce around it?
A
An electric current in a conductor produces a magnetic field around it. This phenomenon is described by Ampere’s Law, where a current-carrying conductor induces a magnetic field.
2
Q
What type of magnetic field pattern does a straight wire carrying current exhibit?
A
Circular magnetic field lines around the wire. The right-hand grip rule demonstrates the circular field around a straight current-carrying wire.
