AH Exp – Electrical Phenomena 04 – Magnetic induction around a long straight wire

Aim – To investigate the relationship between the magnetic induction around a long straight wire and the distance from the wire.

Instructions

▪ An emf is induced in the search coil which is proportional to the magnetic induction B.
▪ The search coil is close to the wire and the voltmeter reads a maximum.
▪ Click and drag the search coil to the right so that it moves at right angles to the wire.
▪ Note the reading of the voltmeter at intervals up to 50 cm from the wire.
▪ Draw a graph to show the relationship between magnetic induction and distance from the wire.

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