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11. Two parallel wires have the same current of 30 A in the opposite directions. If the force per unit length (F/L) is 2.52 x 10 N/m, how close to each other would they be? a. 7.14 cm b. 71.4 m c. 0.714 cm d. none of these

11. Two parallel wires have the same current of 30 A in the opposite directions. If the force per unit length (F/L) is 2.52 x 10 N/m, how close to each other would they be? a. 7.14 cm b. 71.4 m c. 0.714 cm d. none of these

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question 11

### Physics Problem Set **Question 9:** A multi-loop coil has a current of 2.00 A passing through it, and its radius is 30 cm. If the magnetic field (B) at the center of the coil is 0.0017 T, find the number of loops the coil has. Options: - a. 1275 - b. 203 - c. 812 - d. 406 **Question 10:** A solenoid has 2500 turns over the length of 70 cm. How much current is needed to generate a 0.50 T magnetic field at the center of the solenoid? Options: - a. 11.4 A - b. 11141 A - c. 111.4 A - d. none of these **Question 11:** Two parallel wires have the same current of 30 A in opposite directions. If the force per unit length (F/L) is 2.52 x 10^-4 N/m, how close to each other would they be? Options: - a. 7.14 cm - b. 71.4 m - c. 0.714 cm - d. none of these **Additional Information:** The simple design with a slidable wire section can be treated as a generator. If the magnetic field is 0.65 T and the speed of the slide wire is 4.5 m/sec (L = 75 cm). **Diagram Description:** The diagram shows a conducting loop with a slidable wire section. The loop is placed in a uniform magnetic field, and the movement of the wire generates an electromagnetic force across it due to its motion within the field.
Transcribed Image Text:### Physics Problem Set **Question 9:** A multi-loop coil has a current of 2.00 A passing through it, and its radius is 30 cm. If the magnetic field (B) at the center of the coil is 0.0017 T, find the number of loops the coil has. Options: - a. 1275 - b. 203 - c. 812 - d. 406 **Question 10:** A solenoid has 2500 turns over the length of 70 cm. How much current is needed to generate a 0.50 T magnetic field at the center of the solenoid? Options: - a. 11.4 A - b. 11141 A - c. 111.4 A - d. none of these **Question 11:** Two parallel wires have the same current of 30 A in opposite directions. If the force per unit length (F/L) is 2.52 x 10^-4 N/m, how close to each other would they be? Options: - a. 7.14 cm - b. 71.4 m - c. 0.714 cm - d. none of these **Additional Information:** The simple design with a slidable wire section can be treated as a generator. If the magnetic field is 0.65 T and the speed of the slide wire is 4.5 m/sec (L = 75 cm). **Diagram Description:** The diagram shows a conducting loop with a slidable wire section. The loop is placed in a uniform magnetic field, and the movement of the wire generates an electromagnetic force across it due to its motion within the field.
Expert Solution
Step 1

11) Force per unit length of wire = μo I1I2/2πd2.52 * 10-4 = 4π * 10-7 * 30* 30/(2πd)d = 0.714 m d = 71.4 cm 

 

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