8.2 Force on a current carrying conductor in magnetic field

b) based on the diagram above, choose the direction of the forces that act on the sides AB and CD of the coil.

• AB:UPWARD;CD:DOWNWARD

• AB:DOWNWARD;CD:UPWARD

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

c) What is the rule that is used to determine the direction of the force that acts on the coil?

(a)  

What does the thumb indicate in flemings left hand rule?

• Force

• 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.MS-PS2-3

NGSS.MS-PS2-5

A represented by

• direction of magnitude current

• direction of force

• direction of magnetic field

• direction of rotation

Diagram shows a dc motor. What is the functions of brush carbon?

• Push the brush so it will always contact with the commutator.

• To contact with the commutator so the current from the battery enters the coil.

• Reverse the direction of current in the coil every half rotation so that the coil continues to turn in same direction

Application of the force on current carrying conductor in a magnetic field

• Moving coil ammeter

• dynamo

• Dc motor

• electrIc bell

• Dc generator

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How can you test to see if there is a current running through a wire?

• listen carefully to see if you hear a buzzing sound

• place several compasses around the wire

• place several batteries around the wire

Diagram shows a coil placed between the poles of a permanent magnet and is connected to the external circuit.Determine the direction of rotation of the coil when the switch is closed.

• Clock wise

• Anti Clock wise

• Alternately, anticlockwise then clockwise

• Alternately, clockwise then anticlockwise

Diagram shows a coil placed between two opposite magnetic poles. An electric current flows through the coil producing a pair of turning force, F.Which diagram shows the correct catapult field ?

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