Two long metal wires are connected to a uniform metal ring with radius r. The total current flows into and out of the ring at the points A and C as shown. (a) Calculate the magnitude and direction of the magnetic field at the center of the ring. HINT - to compute the B-field for the long semi-infinite wires you can use the formula given in the posted notes ( Week 11a - page 2 = slide 76 ). (b) If the metal ring has a resistance of p per unit length, calculate the potential at A and B when th reference voltage is Vc = 0. B
Two long metal wires are connected to a uniform metal ring with radius r. The total current flows into and out of the ring at the points A and C as shown. (a) Calculate the magnitude and direction of the magnetic field at the center of the ring. HINT - to compute the B-field for the long semi-infinite wires you can use the formula given in the posted notes ( Week 11a - page 2 = slide 76 ). (b) If the metal ring has a resistance of p per unit length, calculate the potential at A and B when th reference voltage is Vc = 0. B
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Transcribed Image Text:Two long metal wires are connected to a uniform metal ring with radius r. The total current flows
into and out of the ring at the points A and C as shown.
(a) Calculate the magnitude and direction of the magnetic field at the center of the ring. HINT - to
compute the B-field for the long semi-infınite wires you can use the formula given in the posted
notes ( Week 11a - page 2 = slide 76 ).
(b) If the metal ring has a resistance of p per unit length, calculate the potential at A and B when the
reference voltage is Vc = 0.
B
A
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