Electricity is distributed from electrical substations to neighborhoods at 1.6×104 v . this is a 60 hz oscillating (ac) voltage. neighborhood transformers, seen on utility poles, step this voltage down to the 120 v that is delivered to your house. part a how many turns does the primary coil on the transformer have if the secondary coil has 140 turns? express your answer using two significant figures. n prim n p r i m = nothing turns submitrequest answer part b no energy is lost in an ideal transformer, so the output power p out from the secondary coil equals the input power p in to the primary coil. suppose a neighborhood transformer delivers 230 a at 120 v . what is the current in the 1.6×104 v line from the substation? express your answer using two significant figures. i i i i = nothing a submitrequest answer provide feedback next
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An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to
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Electricity is distributed from electrical substations to neighborhoods at 1.6×104 v . this is a 60...
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