Students in a Physics practical class investigate the piece of electrical equipment shown in Figure 5. It consists of a single rectangular loop of wire that can be rotated within a uniform magnetic field. The loop has dimensions 0.50 m × 0.25 m and is connected to the output terminals with slip rings. The loop is in a uniform magnetic field of strength 0.40 T.
- What name best describes the piece of electrical equipment shown in Figure 5. (1 mark)
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- What is the magnitude of the flux through the loop when it is in the position shown in Figure 5? Explain your answer. (2 marks)
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The students connect the output terminals of the piece of electrical equipment to an oscilloscope. One student rotates the loop at a constant rate of 20 revolutions per second.
- Calculate the period of the rotation of the loop. (1 mark)
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- Calculate the maximum flux through the loop. Show your working. (1 mark)
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- The loop starts in the position shown in Figure 5.
- What is the average voltage measured across the output terminals for the first quarter turn? Show your working. (2 marks)
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