Magnetic Fields Around Current Carrying Wires

What do magnetic field lines indicate about a magnetic field?

• The direction and strength of the magnetic field

• The temperature of the magnetic field

• The age of the magnetic field

• The color of the magnetic field

How does the direction of the magnetic field change when the current direction is reversed?

• The magnetic field disappears

• The magnetic field direction remains the same

• The magnetic field direction reverses

• The magnetic field becomes stronger

According to the corkscrew rule, what does turning the screw clockwise represent?

• The direction of the current

• The temperature of the wire

• The direction of the magnetic field

• The strength of the magnetic field

What happens to the magnetic field direction when the current flows out of the screen?

• It becomes stronger

• It becomes anti-clockwise

• It becomes clockwise

• It disappears

What effect does increasing the current have on the magnetic field strength?

• It decreases the magnetic field strength

• It increases the magnetic field strength

• It changes the direction of the magnetic field

• It has no effect on the magnetic field strength

How does the distance from the wire affect the magnetic field strength?

• The magnetic field strength remains constant

• The magnetic field strength doubles with distance

• The magnetic field strength decreases with distance

• The magnetic field strength increases with distance

What is the relationship between the density of magnetic field lines and the strength of the magnetic field?

• Higher density indicates a weaker magnetic field

• Density indicates the color of the magnetic field

• Higher density indicates a stronger magnetic field

• Density has no relation to magnetic field strength