Figure 4a shows a single square loop of conducting wire placed just outside a constant uniform magnetic field, \(B\). The length of each side of the loop is 0.040 m. The magnetic field has a magnitude of 0.30 T and is directed out of the page.
Over a time period of 0.50 s, the loop is moved at a constant speed, \(v\), from completely outside the magnetic field, Figure 4a, to completely inside the magnetic field, Figure 4b.
- Calculate the average EMF produced in the loop as it moves from the position just outside the region of the field, Figure \(4 \mathrm{a}\), to the position completely within the area of the magnetic field, Figure 4b.
- Show your working. (2 marks)
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- On the small square loop in Figure 5, show the direction of the induced current as the loop moves into the area of the magnetic field. (1 mark)
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