1- Three 6-ohms resistors in a series circuit give equivalent resistance of 2- The circuit contains three ammeters. What is the total current measured by ammeter AT?

3- If you break a magnet in two unequal parts, what will result?

A- The result will be two magnets each with two opposite magnetic poles.
B- The result will be two magnets, each with one magnetic pole.
C-The result will be two pieces of metal that have lost their magnetic properties.
D- The larger piece will retain the magnetism, but the smaller one will not.

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Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants

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