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1. Define magnetic flux in general terms. What two quantities does magnetic flux depend on?
1. Define magnetic flux in general terms. What two quantities does magnetic flux depend on? (1 point)
2. Consider The magnet flux through a coil of wire with area A = 100 cm2 and n = 160 turns. If a magnetic field is increasing through the coil at a rate of 0.75 Tesla/sec, what is the induce emf around the coil? (2 points)
3. Hold the magnet as steady as you can in the coil. Is there an induce emf around the coil? Why or why not? (2 points)
4. Assume the frequency generator used had a fine adjustment range of 0.1-3. With the course adjustment being in powers of 10. What setting for the two frequency knobs on the function generator would give a signal with a frequency of 4000 Hz? (1 point)
5. On the Oscilloscope, what do the vertical and horizontal axes represent? Recall that each axis was divided into little boxes. There are 10 horizontal boxes, and 8 vertical boxes. If TIME/DIV is set to 1 second, what is the minimum frequency of a waveform that could be fully displayed on the screen? (2 points)
6. If a scope has the Volts/DIV set to 2. What is the maximum signal voltage you can display? Assume the screen has 8 divisions. (1 point)
7. What were the maximum currents and voltages you were able to induce with the permanent magnet? How long were they present for (estimate)? What affected the amplitude of the induced current and voltages? (2 points)
8. In part 4.3.3 (Induction between two Coils) there is no magnetic like previous part 4.3.2 (Magnetic and Coil), but there is an induced voltage (emf) in the second coil as measured by the Oscilloscope. Where does the changing magnet flux that induces the voltage come from? How is the magnetic flux propagated to the second coil? (2 point)
9. Plot the voltage amplitude vs frequency for your data taken with the two coils. What can you say about the relation between the two? Why might you expect this? (3 points)
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