Q.1
What is produced when a current flows through a wire?
  • Voltage
  • Magnetic field
  • Mass
  • Neutrons
Q.2
Which of the following is an application of an electromagnet?
  • Crane for lifting steel/iron
  • Drum set
  • Light switch
  • PC mouse
Q.3
How can the force applied to a current carrying wire be increased?
  • Increase magnetic field
  • Decrease magnetic field
  • Both increase and decrease magnetic field
  • Neither increase nor decrease magnetic field
Q.4
Another way to increase the force is to …
  • decrease the current
  • reverse the current
  • keep the current the same
  • 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?
  • Parallel
  • Perpendicular
  • At 45 degrees to the field
  • At 120 degrees to the field
Q.6
How can the force experienced by a current carrying wire be reversed?
  • Reverse direction of current/magnetic field
  • Increase the current above a threshold point
  • Decrease the current below a threshold point
  • 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?
  • Nothing
  • Field
  • Current
  • 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?
  • Communicator
  • Commutator
  • Commentator
  • Conductor
Q.9
Revisiting Fleming's left hand rule, the current is represented by …
  • the thumb
  • the little finger
  • second (middle) finger
  • first finger
Q.10
What is the direction of the magnetic field relative to the current in a current carrying wire?
  • Parallel
  • Perpendicular
  • Parallel and perpendicular
  • The magnetic field in a current carrying wire cannot be measured
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