You You\'ve seen how a charged object that is moving through a magnetic field wi
ID: 2276743 • Letter: Y
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You've seen how a charged object that is moving through a magnetic field will feel a force. If a metal rod is moved through magnetic field, the charged particles will feel a force, and if there is a complete circuit, a current will flow. We talk about the induced emf of the rod. The rod essentially acts like a battery, and the induced emf is the voltage of the battery. A magnetic field with a strength of 0.623 T is pointing into the page and a metal rod L=0.796 m in length is moved to the right at a speed v of 14.9m/s. What is the induced emf in the rod? Suppose the rod is sliding on conducting rails, and a complete circuit is formed. If the load resistance is 4.76 ?, what is the magnitude and direction (clockwise or counterclockwise) of the current flowing in the circuit?Explanation / Answer
emf = B L v = 0.623 * 0.796 * 14.9 = 7.389 = 7.39 V
current = i = V/R = 7.389/4.76 = 1.55 A
Counterclockwise
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