CAIE A-Level Physics A2 20.5.2 Ba Questions

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Fig. 7.1 shows a coil at rest in a uniform magnetic field that is parallel to the axis of the coil.

Fig. 7.1

The coil is connected to a centre-zero voltmeter.

The flux density B of the uniform magnetic field varies with time t as shown in Fig. 7.2.

Fig. 7.2

The coil consists of 340 turns, each of cross-sectional area $3.2 \times 10^{-4} \mathrm{~m}^{2}$ .

Calculate the maximum magnetic flux through one turn of the coil.
maximum magnetic flux = Wb

$\begin{aligned} \Phi =B A =7.2 \times 10^{-3} \times 3.2 \times 10^{-4} =2.3 \times 10^{-6} \mathrm{~Wb} \end{aligned}$

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CAIE A-Level Physics A2 20.5.2 Ba Topic Practice