Magnetism

What is common to all resistors in a series circuit?

• They have the same voltage across them.

• They have the same current flowing through them.

• They have the same resistance value.

• They have the same power dissipation.

What are the magnetic flux patterns of circuits?

• Circular around the wire

• Linear along the wire

• Randomly distributed

• None of the above

How is Fleming’s right hand rule applied in relation to a basic alternator?

• It determines the direction of the magnetic field.

• It determines the direction of induced current.

• It determines the speed of the alternator.

• It determines the voltage output of the alternator.

Which of the following is an application of electromagnetism?

• Electric motors

• Photosynthesis

• Nuclear fusion

• Sound waves

Fill in the blank: Magnetic field lines are strongest at the ends (poles) and never _______.

• meet

• cross

• overlap

• intersect

What is created around a current carrying conductor, when current flows through?

• A) Electric Field

• B) Magnetic Field

• C) Gravitational Field

• D) None of the above.

What does Maxwell's Cork-screw Rule demonstrate?

• The direction of electric current

• The direction of magnetic field

• The direction of gravitational force

• The direction of light

What does the screw rule indicate when the current is flowing into the screen?

• A) South Pole

• B) North Pole

• C) East Pole

• D) West Pole

Fill in the blank: When the current is flowing towards you (out of the screen), the screw rule indicates the ______ Pole.

• North

• South

• East

• West

What is the purpose of using the left hand in the Left Hand Motor Rule?

• To determine the direction of the magnetic field

• To determine the direction of the force created by an electrical motor

• To determine the direction of the current

• To determine the direction of the voltage