The Motor Effect

Why might a current-carrying wire be placed between a magnetic field?

• To increase the current from the interaction of magnetic fields

• To increase the voltage from the interaction of magnetic fields

• To produce a force from the interaction of magnetic fields

Tags

NGSS.HS-PS2-5

What does the first-finger indicate in Flemings left hand rule?

• Force

• Motion

• Current

• Magnetic field direction

What direction is the force/motion in the following diagram?

• Perpendicular to the magnets

• Downwards

• Parallel and through the magnets

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What angle must there be between a magnetic field and a conductor in order for the maximum force to be exerted?

• 180

• 45

• 90

• 270

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Name the effect that causes a coil of current-carrying wire in an electric motor to move.

• The electromagnetism effect

• The magnetic effect

• The motor effect

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which rule can be used to work out which way a coil of wire rotates in a motor?

• Fleming's left-hand rule

• Fleming's right-hand rule

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Give two ways you can reverse the direction of a basic dc motor?

• Reverse the current

• Keep the current the same

• Reverse the magnetic field

• Keep the magnetic field the same

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What does the thumb indicate in flemings left hand rule?

• Force

• Motion

• Current

• Magnetic field direction

The current in the green wire flows from the left to the right. What direction does the wire move?

• Up 
• Down
• Into the page
• Out of the page

The diagram show the direction of magnetic field, B and current, I.

By using Fleming left hand rules, determine the direction of Magnetic force, F.

• no force produced

• downward

• into the page

• out from the page