20 A * NI Q M 14% Ô 4:08 PMа. 73 m/sb. 10655 m/sс. 103.3 m/sd. none of these19. find the radius of the circular path of the moving charge in the B field.а. 1291.3 mb. 12.91 mc. 912.5 md. 344 m20. Two parallel wires have currents of 5 A and 3 A in opposite direction. The distance between themis 24 cm. Find the force of interaction per unit length. i.e. L= 1.0000 metera. 1.25 x 10 N/mb. 3.93 x 10° N/mс. 1.25 х 105 N/md. 3.93 x 103 N/m21. A multi-loop wire of 150 turns is placed in a uniform magnetic field that is parallel to the normal ofthe loop. The strength of the magnetic field is 3.00 T, the area of the loop begins shrinking at aconstant rate of AA/At = 0.40 m²/sec. What is the magnitude of the emf induced in the loop while it isshrinking?a. 180 Vb. 1125 Vc. 20.0 Vd. 38.4 V22. An inductor with inductance of 50 mH is placed in a circuit. When the current suddenly drops from5.5 A to 2.1 A in 8.00 sec, what is the magnitude of the induced emf?a. 0.034 Vb. 13.1 Vc. 0.021 Vd. 0.013 V

Current in 1st wire is I1 = 5 A Current in other wire is I2 = 3 A Distance between the wires is d =…

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 10 N/m b. 3.93 x 10 N/m c. 1.25 x 10 N/m d. 3.93 x 103 N/m

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 10 N/m b. 3.93 x 10 N/m c. 1.25 x 10 N/m d. 3.93 x 103 N/m

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 28P: An electron in a TV CRT moves with a speed of 6.0107 m/s, in a direction perpendicular to Earth's...

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Question

A * NI Q M 14% Ô 4:08 PM
а. 73 m/s
b. 10655 m/s
с. 103.3 m/s
d. none of these
19. find the radius of the circular path of the moving charge in the B field.
а. 1291.3 m
b. 12.91 m
c. 912.5 m
d. 344 m
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 10 N/m
b. 3.93 x 10° N/m
с. 1.25 х 105 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?
a. 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

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