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Author Question: Two long parallel wires are separated by 4.0 cm. One of the wires carries a current of 20 A and the ... (Read 238 times)

Mr. Wonderful

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on: Jul 28, 2018
Two long parallel wires are separated by 4.0 cm. One of the wires carries a current of 20 A and the other carries a 30-A current. Determine the magnitude of the magnetic force on a 2.0-m length of the wire carrying the greater current.
 a. 7.0 mN
  b. 6.0 mN
  c. 8.0 mN
  d. 9.0 mN
  e. 4.0 mN

Question 2

Three long, straight, parallel wires all lie in the yz plane and each carries a current of 20 A in the positive z direction. The two outer wires are each 4.0 cm from the center wire. What is the magnitude of the magnetic force on a 50-cm length of either of the outer wires?
 a. 1.0 mN
  b. 0.50 mN
  c. 1.1 mN
  d. 1.5 mN
  e. 2.0 mN


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kkenney

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

D


Mr. Wonderful

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

mohan

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Reply 3 on: Yesterday
Excellent

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