21. A multi-loop wire of 150 turns is placed in a uniform magnetic field that is parallel to the normal of the loop. The strength of the magnetic field is 3.00 T, the area of the loop begins shrinking at a constant rate of AA/At = 0.40 m²/sec. What is the magnitude of the emf induced in the loop while it is shrinking? a. 180 V b. 1125 V c. 20.0 V d. 38.4 V

21. A multi-loop wire of 150 turns is placed in a uniform magnetic field that is parallel to the normal of the loop. The strength of the magnetic field is 3.00 T, the area of the loop begins shrinking at a constant rate of AA/At = 0.40 m²/sec. What is the magnitude of the emf induced in the loop while it is shrinking? a. 180 V b. 1125 V c. 20.0 V d. 38.4 V

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 83CP: A particle accelerator produces a beam with a radius of 1.25 mm with a current of 2.00 mA. Each...

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Question

100%

A * N O 3.
12% O 4:50 PM
20. Two parallel wires have currents of 5 A and 3 A in opposite direction. The distance between them
is 24 cm. Find the force of interaction per unit length. i.e. L = 1.0000 meter
a. 1.25 x 103 N/m
b. 3.93 x 10$ N/m
c. 1.25 x 10 N/m
d. 3.93 x 103 N/m
21. A multi-loop wire of 150 turns is placed in a uniform magnetic field that is parallel to the normal of
the loop. The strength of the magnetic field is 3.00 T, the area of the loop begins shrinking at a
constant rate of AA/At = 0.40 m²/sec. What is the magnitude of the emf induced in the loop while it is
shrinking?
а. 180 V
b. 1125 V
c. 20.0 V
d. 38.4 V
22. An inductor with inductance of 50 mH is placed in a circuit. When the current suddenly drops from
5.5 A to 2.1 A in 8.00 sec, what is the magnitude of the induced emf?
a. 0.034 V
b. 13.1 V
c. 0.021 V
d. 0.013 V
Domestic power source has rms voltage 120 V and a frequency of 60 Hz. When you connect an RLC
circuit with R=502, L = 70 mH and C= 40 µF,

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