Magnetic Field and Field Lines
Physics ⇒ Electricity and Magnetism
Magnetic Field and Field Lines starts at 8 and continues till grade 12.
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See sample questions for grade 10
A compass needle placed near a bar magnet points in a certain direction. What does this indicate about the magnetic field at that point?
A solenoid is a coil of wire with many turns. What is the nature of the magnetic field inside a long solenoid?
A straight conductor carries a current of 5 A. What is the direction of the magnetic field at a point above the wire if the current flows from south to north?
A student increases the number of turns in a coil while keeping the current constant. What happens to the magnetic field at the center of the coil?
A student observes that the magnetic field lines are denser at the ends of a bar magnet. What does this indicate?
A student places a bar magnet under a sheet of paper and sprinkles iron filings on top. What pattern will the filings form and why?
Describe how the magnetic field lines look around two unlike poles of two bar magnets placed close to each other.
Describe the shape of the magnetic field lines around a straight current-carrying conductor.
Describe what happens to the magnetic field lines when two like poles of two bar magnets are brought close to each other.
Explain why magnetic field lines never cross each other.
If the direction of current in a straight conductor is reversed, what happens to the direction of the magnetic field around it?
State one difference between electric field lines and magnetic field lines.
State the rule used to determine the direction of the magnetic field around a straight current-carrying conductor.
What happens to the magnetic field strength at the center of a circular coil if the number of turns is doubled, keeping the current constant?
What is a magnetic field?
What is the effect on the magnetic field strength if the current in a solenoid is tripled?
Which rule is used to determine the direction of the magnetic field produced by a current-carrying circular loop?
