P4.1.2 - Currents And Fields Flashcards
1
Q
What has produced the strongest magnetic field?
A
An MRI scanner
2
Q
When did Hans Christian Oersted discover there is a magnetic field around a current flowing through a wire?
A
1820
3
Q
How can the current in the wire affect magnetic flux density?
A
The magnitude of the current
Distance from wire
4
Q
What is magnetic flux density measured in?
A
Tesla’s
5
Q
What is the strength of the Earth’s magnetic field?
A
0.01mT
6
Q
How does a solenoid or coil increase the magnetic flux density?
A
It increases the magnitude of the current and creates multiple magnetic fields which add together
