Figure 26.19 shows a search coil with 2000 turns and cross-sectional area 1.2 cm². It is placed between the poles of a strong magnet. The magnetic field is perpendicular to the plane of the coil. The ends of the coil are connected to a voltmeter. The coil is then pulled out of the magnetic field, and the voltmeter records an average induced e.m.f. of 0.40 V over a time interval of 0.20 s. Calculate the magnetic flux density between the poles of the magnet.

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2000 turns voltmeter