Please explain how to do this. 2. The figure below shows a conducting loop lying

Question

Please explain how to do this.
2. The figure below shows a conducting loop lying in an area of uniform magnetic field of 3.0 T coming out of the page. An additional sliding conductor completes the circuit. The loop is initially a square of sides 3.0 m. The sliding piece is then moved to the left by 2.0 m in 4.0 s. (30 points) A. What is the change in magnetic flux? B. What is the induced emf? C. What is the direction of the magnetic field from the induced current? Explain. D. What is the direction of the induced current? Why? E. What is the direction of the force from the magnetic field on the sliding bar? Explain

Explanation / Answer

A)

magnetic flux = B*A

change in magnetic flux = B*dA = B*l*dx

change in magnetic flux = 3*3*2 = 18 T m^2

(B)

induced emf = rate of change in flux = B*A*dx/dt = 18/4 = 4.5 V

-------------

c)

as the rod is moving the magnetic flux increases

the induced magnetic field opposite to the external field

induced field is is into the page

==============

d)

the current is clockwise

--------------

e)

F = I*(L x B)

to the left

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---