Calculate the induced emf Express your answer to two significant figures and inc

Question

Calculate the induced emf Express your answer to two significant figures and include the appropriate units. In the figure, the rod moves to the right with a speed of 1.6 m/s and has a resistance of 2.2 .(Figure 1) The rail separation is l = 25.5 crn . The magnetic field is 0.38 T, and the resistance of the U-shaped conductor is 26.5 at a given instant. e-Value Units Submit Part B Calculate the current in the U-shaped conductor Express your answer to two significant figures and include the appropriate units. Figure 1 of 1 1= 1 Value Units Submit t Answer Part C Calculate the external force needed to keep the rod's velocity constant at that instant. Express your answer to two significant figures and include the appropriate units. B (outward)

Explanation / Answer

Part A )

e = B L V

e = 0.38 X 0.255 X 1.6

e = 0.15504 volts

Part B )

i = e / ( r + R )

i = 0.15504 / ( 2.2 + 26.5 )

i = 5.402 X 10-3 A

i = 5.402 mA

Part C )

using F = B i L

F = 0.38 X 5.402 X 10-3 X 0.255

F = 5.234 X 10-4 N

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