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WorksheetsQuiz 2 - Force on a Current-carrying Conductor in
Total questions: 10
Worksheet time: 10mins
When a current-carrying conductor is placed in a magnetic field, the conductor will experience a _______
pressure
heat
force
impulse
Which is the correct rule to determine the direction of the force or motion of the conductor carrying current in a magnetic field?
Catapult field is the resultant magnetic field produced by
interaction between the electric field from a current-carrying conductor and the magnetic field from permanent magnet
interaction between the magnetic field from a current-carrying conductor and the magnetic field from permanent magnet
superimposed between the magnetic field and electric field of the current-carrying conductor
interaction between two magnetic fields from current-carrying conductor
Figure above shows the results of increasing the current which produces a bigger swing. Which are the best methods to increase the magnitude of the current? (More than 1 answer)
Using shorter wire
Using thinner wire
Increase the e.m.f
Increase the number of turns of wire
Figure above shows the arrangement of apparatus to study the effect of a force on a current-carrying conductor.
State the direction of the current along the copper wire and its motion?
Current flow: From X to Y
Motion of Copper wire: To the left
Current flow: From X to Y
Motion of Copper wire: To the right
Current flow: From Y to X
Motion of Copper wire: To the left
Current flow: From Y to X
Motion of Copper wire: To the right
The coil carrying current in a magnetic field rotates due to __________ with equal magnitudes but __________ on the both sides of the coil which produces a __________.
single force; same direction; momentum
two pair of forces; opposite direction; momentum
single force; same direction; turning effect
two pair of forces; opposite direction; turning effect
Which diagram shows the correct magnetic field pattern of the current-carrying coil?
What is the functions of commutator?
Reverse the direction of current in the coil every half rotation so that the coil continues to turn in same direction
To contact with the commutator so the current from the battery enters the coil.
Push the brush so it will always contact with the commutator.
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
Which factor does not influence the speed of rotation of a direct current motor?
Current in the coil
Strength of magnetic field
Coil with more turns
Use soft iron core
