a) A horizontal compass is placed 18 cm due south from a straight vertical wire

Question

a) A horizontal compass is placed 18 cm due south from a straight vertical wire carrying a 45 -A current downward. In what direction does the compass needle point at this location? Assume the horizontal component of the Earth's field at this point is 0.45 x 10^-4 T and the magnetic declination is 0 degree. b) Calculate the magnitude of the magnetic force on a 220m length of wire stretched between two towers and carrying a 130A current. The Earth's magnetic field of 4.0 10?5T makes an angle of 73degree with the wire.in Newtons

Explanation / Answer

b)F=i(LXB)==130*220*4*10-5*sin73=1.0940

a)pointing towards west of south

we can find if you given mass of wire

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