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Chrome File Edit View History Bookmarks People Window Help Mastering Physics: Chapter 29 Homework https:// session.masteringphysics.com/ myct/itemView? 16848 MIPABRAHAM 25242016S Chapter 29 Homework Exercise 29.30 Exercise 29.30 Calculate the magnitude of the emfinduced in the circuit. Express your answer with the appropriate units. A 0.850-m-long metal bar is pulled to the right at a steady 5.0 m/s perpendicular to a uniform, 0.550-T magnetic field. The bar rides on parallel metal rails connected through a 25-2, resistor (Figure 1), so the apparatus makes a complete circuit. Ignore the resistance of the bar and the rails. E Value Units Subm My Answers Give Up Figure 1 Part B Find the direction of the current induced in the circuit. clockwise counterclockwise Subm My Answers Give Up Part C Calculate the current through the resistor Express your answer with the appropriate units R 79%, Wed 11:55 PM E Signed in as Tanner Calloway Help Close previous l 6 of 9 l next

Explanation / Answer

A) By using: E=vBI

=>  5*0.550*0.850= 2.3375 V

B) The flux through the circuit is increasing, so the induced current must cause a magnetic field out of the paper to oppose this increase. Hence this current must flow in a counter "clock wise" sense

C)  i= E/R

=>2.3375/25= 0.0935 A

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