A circular loop in the plane of the paper lies in a 0.80 T magnetic field pointing into the paper. If the loop's diameter changes from 20.8 cm to 6.6 cm in 0.64 s, what is the direction of the induced current? Oclockwise O counterclockwise Submit ✓ Correct Part B Previous Answers What is the magnitude of the average induced emf? Express your answer using two significant figures. E| ΑΣΦ E = .15 Submit Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining V

A circular loop in the plane of the paper lies in a 0.80 T magnetic field pointing into the paper. If the loop's diameter changes from 20.8 cm to 6.6 cm in 0.64 s, what is the direction of the induced current? Oclockwise O counterclockwise Submit ✓ Correct Part B Previous Answers What is the magnitude of the average induced emf? Express your answer using two significant figures. E| ΑΣΦ E = .15 Submit Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining V

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 27P: . The generator at a large power plant has an output of 1,000,000 kW at 24,000 V. (a) If it were a...

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a. Does the induced emf in a circuit depend on the resistance of the circuit? (b) Does the induced current depend on the resistance of the circuit?
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The magnetic field through a single loop of wire 12.0 cm in radius and of 7.5 Ω resistance changes with time as shown in the figure. Calculate the emf in the loop as a function of time.What is the emf at t = 1.0 s? For the sign take the loop in the plane of the paper, and the magnetic field out of the paper. Take clockwise to be positive emf. What is the emf at t = 3.0 s? What is the emf at t = 5.0 s? What is the current at t = 1.0 s?
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