30. Induction and Inductance
Lenz's Law
9PRACTICE PROBLEM
A 0.75-cm-radius copper loop with a resistance of 0.75 Ω is positioned inside a 1.25-cm-radius solenoid that is 100.0 cm long and consists of 800 turns. The solenoid carries a current that changes with time as shown in the graph. In this system, a positive current flows clockwise. Find the current in the copper loop at t=15.0 ms.
![](https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/bc4247eb-9a44-4ba8-b3ce-edd33bd21d1c)
A 0.75-cm-radius copper loop with a resistance of 0.75 Ω is positioned inside a 1.25-cm-radius solenoid that is 100.0 cm long and consists of 800 turns. The solenoid carries a current that changes with time as shown in the graph. In this system, a positive current flows clockwise. Find the current in the copper loop at t=15.0 ms.