Sources of magnetic fields Flashcards
1
Q
Two parallel identical wires are beside each other with currents going in opposite directions. The magnetic force between the wires is Attractive Repulsive Zero Cannot be determined
A
Repulsive
2
Q
A straight wire carries current I and results in a magnetic field at a distance r from the wire. What happens to the direction of the magnetic field if the current in the wire is reversed?
It is reversed
It stays the same
It goes to zero
A
It is reversed
