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12 Magnetism and the motor effect

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Question 19
H

A student measures the force on a wire in a magnetic field for different currents.

The wire is at right angles to the magnetic field. The length of wire in the field is 6.0 cm.

The Figure shows a graph of the results.

Figure

image

a.

Identify the anomalous result.

[1]
b.

Determine the gradient of the line.

Give the unit.

[3]
c.

The equation for the force on the wire is

F=B×I×lF = B \times I \times lF=B×I×l

Explain why the gradient of the graph is equal to B×lB \times lB×l.

[2]
d.

Calculate the magnetic flux density.

[2]
Markscheme

12 Magnetism and the motor effect Questions

  1. GCSE
  2. /Physics
  3. /12 Magnetism and the motor effect

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