8. The loop in the figure has an induced current as shown. The loop has a resist

Question

8. The loop in the figure has an induced current as shown. The loop has a resistance of 0.39?

http://session.masteringphysics.com/problemAsset/1200847/4/25.16.jpg

Is the magnetic field strength increasing or decreasing?

What is the rate of change of the field, ?B/?t?_______________T/s

10. A potential difference of 4.110?2V is developed across a 10-cm-long wire as it moves through a magnetic field at5.0 m/s. The magnetic field is perpendicular to the axis of the wire and to the direction of motion

http://session.masteringphysics.com/problemAsset/1169585/3/jfk.Figure.25.P01.jpg

What is the strength of the magnetic field?__________________________T

What is the direction of the magnetic field?into the page or out of the page.

11. What is the magnetic flux through the loop shown in the figure below?__________________Wb (Figure 1)

http://session.masteringphysics.com/problemAsset/1169590/2/jfk.Figure.25.P07.jpg

14. A scalloped hammerhead shark swims at a steady speed of 1.4m/s with its 86cm -cm-wide head perpendicular to the earth's 57?T magnetic field.

What is the magnitude of the emf induced between the two sides of the shark's head?

_______________________mV

The loop in the figure has an induced current as shown. The loop has a resistance of 0.39? Is the magnetic field strength increasing or decreasing? What is the rate of change of the field, ?B/?t?_______________T/s A potential difference of 4.1×10?2V is developed across a 10-cm-long wire as it moves through a magnetic field at5.0 m/s. The magnetic field is perpendicular to the axis of the wire and to the direction of motion What is the strength of the magnetic field?__________________________T What is the direction of the magnetic field?into the page or out of the page. What is the magnetic flux through the loop shown in the figure below?__________________Wb (Figure 1) A scalloped hammerhead shark swims at a steady speed of 1.4m/s with its 86cm -cm-wide head perpendicular to the earth's 57?T magnetic field. What is the magnitude of the emf induced between the two sides of the shark's head? mV

Explanation / Answer

induced current is making field out of page so field is increasing

emf=IR = A dB/dt

dB/dt = I*R/A = .15*0.39/0.08^2=9.14

10) emf = B L v

4.1E-2 = B*.1*5
B = 4.1E-2/(.5)=0.082 T

into page

11) flux = 2*.2^2 - 1*.2^2 = 0.04

14) emf = B L v = 57.0E-6*.86*1.4=0.069 mV

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