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Would someone be able to explain the answers to these questions? I am a bit confused on how the primary solenoid is able to induce a current in the secondary solenoid, and how we can find the direction of the current (do we even know the direction of the magnetic field)?

Would someone be able to explain the answers to these questions? I am a bit confused on how the primary solenoid is able to induce a current in the secondary solenoid, and how we can find the direction of the current (do we even know the direction of the magnetic field)?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter20: Induced Voltages And Inductance
Section: Chapter Questions
Problem 11P: Inductive charging is used to wirelessly charge electronic devices ranging front toothbrushes to...
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Would someone be able to explain the answers to these questions? I am a bit confused on how the primary solenoid is able to induce a current in the secondary solenoid, and how we can find the direction of the current (do we even know the direction of the magnetic field)?

13. Two coils, 1 and 2, with iron cores, are positioned as shown in the figure. Coil 1 is part of a circuit with a battery and a switch. Coll 1 htt B Coil 2 ŵ (a) Immediately after the switch S is closed, which of the following statements is true? An induced current will flow from right to left in R. ii. An induced current will flow from left to right in r. iii. A magnetic field that points toward B appears inside coil 1. iv. An induced magnetic field that points toward B appears inside coil 2. v. A current will pass through r, but there will be no current through R. (b) Assume the switch S has been closed for a long time. Which of the following statements is true? i. An induced current will flow from right to left in R. ii. An induced current will flow from left to right in r. iii. A magnetic field that points toward B appears inside coil 1. iv. An induced magnetic field that points toward B appears inside coil 2. A current will pass through r, but there will be no current through R. Assume the switch S has been closed for a long time. Which of the following statements is true when coil 1 and its core are moved toward point B? i. There is no induced current in r. ii. There is a magnetic field in coil 1 that points toward B. iii. There is an induced current in R that flows from left to right. iThere is an induced current in R that flows from right to left. v. There is an induced magnetic field in coil 2 that points toward B.
Transcribed Image Text:13. Two coils, 1 and 2, with iron cores, are positioned as shown in the figure. Coil 1 is part of a circuit with a battery and a switch. Coll 1 htt B Coil 2 ŵ (a) Immediately after the switch S is closed, which of the following statements is true? An induced current will flow from right to left in R. ii. An induced current will flow from left to right in r. iii. A magnetic field that points toward B appears inside coil 1. iv. An induced magnetic field that points toward B appears inside coil 2. v. A current will pass through r, but there will be no current through R. (b) Assume the switch S has been closed for a long time. Which of the following statements is true? i. An induced current will flow from right to left in R. ii. An induced current will flow from left to right in r. iii. A magnetic field that points toward B appears inside coil 1. iv. An induced magnetic field that points toward B appears inside coil 2. A current will pass through r, but there will be no current through R. Assume the switch S has been closed for a long time. Which of the following statements is true when coil 1 and its core are moved toward point B? i. There is no induced current in r. ii. There is a magnetic field in coil 1 that points toward B. iii. There is an induced current in R that flows from left to right. iThere is an induced current in R that flows from right to left. v. There is an induced magnetic field in coil 2 that points toward B.
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