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Q. Four very long wires are directed perpendicular to the plane. The points where these wires cross the plane of the drawing form a square of edge length 0.4 m, and each wire carries a current of magnitude 8 A. Find the magnitude of the magnetic field at the center of the square (i.e., at the origin).

Q. A hair dryer draws a current of 10.7 A.

a.) How much charge passes through the hair dryer in 3.5 min?

b.) How many electrons does this represent?

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  • Category:- Physics
  • Reference No.:- M9281263

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