College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Magnetic Field Of Coaxial Cable
The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequen…
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### Problem 3: **Statement:** Two parallel wires carry a current \( I \) in opposite directions, and this current is increasing. A rectangular loop is centered between the wires. Determine the direction of the induced current through the resistor \( R \). **Diagram Explanation:** - The diagram shows two vertical lines representing the wires. - The wire on the left carries current upwards, while the wire on the right carries current downwards. - Between these wires is a rectangular loop oriented horizontally, with points labeled \( a \) and \( b \) at the top left and top right corners respectively, and the resistor \( R \) is located on the top edge of the loop between \( a \) and \( b \). **Choices:** (A) from \( a \) to \( b \). (B) from \( b \) to \( a \). (C) No current is induced. --- ### Problem 4: **Statement:** A patient having an MRI scan has neglected to remove a copper bracelet. The bracelet is 6.0 cm in diameter and has a resistance of 0.02 Ω. The magnetic field in the MRI solenoid is directed along the person’s body from head to foot; the bracelet is perpendicular to the magnetic field. During a scan, the magnetic field in the solenoid decreases at the rate of 0.50 T/s. What is the magnitude of the current induced in the bracelet? **Diagram Explanation:** - The diagram illustrates a circle with an 'X' pattern indicating a magnetic field directed into the page. - The field is labeled as decreasing at a rate of 0.5 T/s. ---
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Transcribed Image Text:### Problem 3: **Statement:** Two parallel wires carry a current \( I \) in opposite directions, and this current is increasing. A rectangular loop is centered between the wires. Determine the direction of the induced current through the resistor \( R \). **Diagram Explanation:** - The diagram shows two vertical lines representing the wires. - The wire on the left carries current upwards, while the wire on the right carries current downwards. - Between these wires is a rectangular loop oriented horizontally, with points labeled \( a \) and \( b \) at the top left and top right corners respectively, and the resistor \( R \) is located on the top edge of the loop between \( a \) and \( b \). **Choices:** (A) from \( a \) to \( b \). (B) from \( b \) to \( a \). (C) No current is induced. --- ### Problem 4: **Statement:** A patient having an MRI scan has neglected to remove a copper bracelet. The bracelet is 6.0 cm in diameter and has a resistance of 0.02 Ω. The magnetic field in the MRI solenoid is directed along the person’s body from head to foot; the bracelet is perpendicular to the magnetic field. During a scan, the magnetic field in the solenoid decreases at the rate of 0.50 T/s. What is the magnitude of the current induced in the bracelet? **Diagram Explanation:** - The diagram illustrates a circle with an 'X' pattern indicating a magnetic field directed into the page. - The field is labeled as decreasing at a rate of 0.5 T/s. ---
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