Question

In the circuit diagram to the right, the rightmost loop forms a circle. The magnetic field at the center of this circle is measured as time passes after the switch is closed. Assume that this field is caused exclusively by the circular loop, with no contribution by the other parts of the circuit. a. Compare the magnetic field at the center of the loop the instant the switch is closed (t = 0) to the field a long time after the switch is closed (t = ∞) by computing the ratio of the strengths of the fields at these two times: B(0)/B(∞). Also, determine the directions of the magnetic fields at each of these times. b. Find the amount of charge on the capacitor when the magnetic field strength at the center of the loop is zero.

SP 12 In the circuit diagram to the right, the rightmost loop forms a circle. The magnetic field at the center of this circle is measured as time passes after the switch is closed. Assume that this field is caused exclusively by the circular loop, with no contribution by the other parts of the circuit Compare the magnetic field at the center of the loop the instant the switch is closed (t 0) to the field a long time after the switch is closed () by computing the ratio of the strengths of the fields at these two times: B(O)/B(co). Also, determine the directions of the magnetic fields at each of these times. Find the amount of charge on the capacitor when the magnetic field strength at the center of the loop is zero. 25062 1200V- 10.0Ω a. b.

Answer 1

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