first question please A current of 28.1 mA runs through the wire bent into a loo
ID: 2255424 • Letter: F
Question
first question please
A current of 28.1 mA runs through the wire bent into a loop with three radial lengths a semicircle of radius a = 4.68 cm and two quarter circles b = 2 86 cm with a common center point P. What is the magnitude and direction of the magnetic field at point P. Two long, parallel conductors carry current in the same direction as shown. Conductor A Carries a current of 175 A and is held firmly in position. Conductor B carries a current lB and is allowed to slide freely up and down (Parallel to A) between a set of nonconducting guides. If the mass per unit lenth of conductor B is 0.200 Gram/CM, What Value of current lB will result in equilibrium When the two conductors is 2.00CM ?Explanation / Answer
1, magnetic fiedl due to such a segmrnt is given by
B = (u0i/4)(1/a +1/b)
B = 4pi *10^-7 * 0.0281/4)(1/0.0468 +1/0.0286)
B = 4.97 *10^-7 Tesla
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