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Book Problems Review Midterm 3

# Book Problems Review Midterm 3 - A,Bsignment 7 cfw_1719166...

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A,Bsignment 7 {1719166) Due: Fri Mar 11 201 1 11:59 PM CST euestion 1234 5678 Question Details Wolfl 27.E.17. [754326] A circular wire loop 40 cm in diameter has 100 !l resistance and lies in a horizontal plane. A uniform magnetic field points vertically downward, and in 28 ms it increases linearly from 6.0 mT to 57 mT. (a) Find the magnetic flux through the loop at the beginning of the 28 ms period. I o ooo754lT'm' (b) Find the magnetic flux through the loop at the end of this time period. I o ooztolt'm' (c) What is the loop current during this time? l_329)mA(d) Which way does this current flow? fl counterclockwise when viewed from above the loop clockwise when viewed from above the loop. Question Details wolfl 27.E.18. 17541661 A conducting loop of area 255 cm2 and resistance 12 tl lies at right angles to a spatially uniform magnetic field. The loop carries an induced current of 350 mA. At what rate is the magnetic field changing? L 1651r/s Question D€tails Wolfl 27.P.35. [1538522] A conducting loop of area A and resistance R lies at right angles to a spatially uniform magnetic field. At time t = 0 the magnetic field and toop current are both zero. Subsequently, the current increases according to I = bi, where b is a constant with the units A/s2. Find an expression for the magnetic field strength as a function of time. (Use the following as necessary: A, R, t, and |)___---- r------------- i t . /i\

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Book Problems Review Midterm 3 - A,Bsignment 7 cfw_1719166...

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