Prelab Brief
To study the pattern of magnetic field lines around a bar magnet, a straight current-carrying conductor, and a solenoid, and verify the right-hand thumb rule.
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Theory
Visualize magnetic field lines around a bar magnet, current-carrying conductor, and solenoid. To study the pattern of magnetic field lines around a bar magnet, a straight current-carrying conductor, and a solenoid, and verify the right-hand thumb rule.
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Formula
Principle: To study the pattern of magnetic field lines around a bar magnet, a straight current-carrying conductor, and a solenoid, and verify the right-hand thumb rule.
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Aim
To study the pattern of magnetic field lines around a bar magnet, a straight current-carrying conductor, and a solenoid, and verify the right-hand thumb rule.
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Apparatus
- Bar magnet
- Iron filings
- Compass needle
- Straight conductor (wire)
- Battery / DC power supply
- Rheostat
- Solenoid (coil)
- Cardboard sheet
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Procedure
- Place a bar magnet on a cardboard and sprinkle iron filings to observe field pattern.
- Move a compass needle around the magnet and note its alignment.
- Pass current through a straight conductor and observe concentric circular field lines.
- Reverse current direction and observe the change in field direction.
- Pass current through a solenoid and observe the field pattern similar to a bar magnet.
- Vary current strength and observe changes in field intensity.
Pre-Lab Questions
What is the main aim of the Magnetic Field Lines Experiment?
Which principle is demonstrated in the Magnetic Field Lines Experiment?
What apparatus is required for this experiment?
Why is Bar magnet used in this experiment?
What formula or relationship is verified in this experiment?
What precaution should be followed while performing this experiment?
What conclusion can be drawn from the Magnetic Field Lines Experiment?