(a) Recall that change is the difference between the final value of a quantity a
ID: 2006272 • Letter: #
Question
(a) Recall that change is the difference between the final value of a quantity and its initial value. If the north pole of the magnet is moved toward the left through the coil as shown in Figure 2, what is the sign of change of the flux lying in the plane of the coil?(b) What happens to the absolute value of the rate of change of the flux in the area subtended by the coil, if the magnet is moved more rapidly through the coil? Increases, decreases, stays, the same?
(c) According to Faraday’s Law what happens to the absolute value of the maximum value of the induced emf if the magnet is moved more rapidly through the coil? Increases, decreases, stays, the same?
(d) According to Faraday’s Law when will the measured emf induced in the coil be positive? When will it be negative? (Refer to Figure 2 and use + and ¬– signs as appropriate)
1. When the south pole of the magnet moves part way into the coil to the left
2. The magnet is part way into the coil and its south pole is pulled out to the right
3. When the north pole of the magnet moves part way into the coil to the left
4. The magnet is part way in the coil and its north pole is pulled out to the right
Explanation / Answer
A. should be positive because the flux lines and area vectors are pointing in the same direction right?
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