Magnetic Field Associated With a Current (Grade 11 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does an electric current always produce?
What does an electric current always produce?
A magnetic field
What happens to a compass near a wire carrying current?
What happens to a compass near a wire carrying current?
The needle deflects
How is the magnetic field oriented relative to current flow?
How is the magnetic field oriented relative to current flow?
Perpendicular to current
Which hand must you use for the Right Hand Rule?
Which hand must you use for the Right Hand Rule?
Right hand only
What shape are the field lines around a straight current-carrying wire?
What shape are the field lines around a straight current-carrying wire?
Concentric circles
What does the symbol ⊙ represent in field diagrams?
What does the symbol ⊙ represent in field diagrams?
Arrow out of page
When is a magnetic field present around a wire?
When is a magnetic field present around a wire?
Only when current flows
What is a solenoid?
What is a solenoid?
Cylindrical coil of wire
What increases an electromagnet's strength?
What increases an electromagnet's strength?
More coils and iron core
Which device uses electromagnets?
Which device uses electromagnets?
MRI machines