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GCSE
Gcse Physics
Electricity - The Motor Effect
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Q.1
What is produced when a current flows through a wire?
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Voltage
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Magnetic field
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Mass
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Neutrons
Q.2
Which of the following is an application of an electromagnet?
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Crane for lifting steel/iron
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Drum set
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Light switch
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PC mouse
Q.3
How can the force applied to a current carrying wire be increased?
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Increase magnetic field
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Decrease magnetic field
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Both increase and decrease magnetic field
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Neither increase nor decrease magnetic field
Q.4
Another way to increase the force is to …
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decrease the current
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reverse the current
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keep the current the same
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increase the current
Q.5
An electrical conductor will not experience a force in a circuit if it is placed in what position relative to the magnetic field?
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Parallel
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Perpendicular
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At 45 degrees to the field
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At 120 degrees to the field
Q.6
How can the force experienced by a current carrying wire be reversed?
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Reverse direction of current/magnetic field
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Increase the current above a threshold point
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Decrease the current below a threshold point
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You cannot reverse the force felt by a wire
Q.7
Fleming's left hand rule can be used to work out the direction of movement (force), magnetic field and current. What does the thumb represent in this rule?
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Nothing
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Field
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Current
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Movement (force)
Q.8
What is used to transfer an electrical current to a loop of wire sitting in a magnetic field, in a motor?
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Communicator
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Commutator
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Commentator
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Conductor
Q.9
Revisiting Fleming's left hand rule, the current is represented by …
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the thumb
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the little finger
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second (middle) finger
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first finger
Q.10
What is the direction of the magnetic field relative to the current in a current carrying wire?
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Parallel
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Perpendicular
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Parallel and perpendicular
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The magnetic field in a current carrying wire cannot be measured
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