Part A Exercise 29.28 Calculate the magnitude of the emf induced in the circuit.
ID: 1630761 • Letter: P
Question
Part A Exercise 29.28 Calculate the magnitude of the emf induced in the circuit. Express your answer using two significant figures A 1.30-m-long metal bar is pulled to the right at a steady 5.7 m/s perpendicular to a uniform, 0.730-T magnetic field. The bar rides on parallel metal rails connected through R 25.6-2, as shown in the figure (Figure 1) so the apparatus makes a complete circuit. You can ignore the resistance of the bar and the rails. Submit My Answers Give Up Part B Find the direction of the current induced in the circuit. clockwise Figure 1 of 1 counterclockwise Submit My Answers Give Up Correct Part C Calculate the current through the resistor. Express your answer using two significant figures.Explanation / Answer
Given,
Length of metal bar, l = 1.30 m
Velocity, v = 5.7 m/s
Magnetic field, B = 0.730 T
Resistance, R = 25.6 ohm
a) Magnetic flux associated with the circuit is (t) and
emf, = d(t) / dt = B x l x v = 0.730 x 1.30 x 5.7 = 5.41 V
c) Current through resistor, I = (V/R) = (5.41 / 25.6) = 0.211 A
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