Electricity is distributed from electrical substations to neighborhoods at 15000 V. This is a 60 Hz ocillating (AC) voltage. Neighborhood transformers, seen on utility poles, step this voltage down to the 120 V that is delivered to your house. How many turns does the primary coil on the transformer have if the secondary coil has 100 turns? • View Available Hint(s) nprim = 1.3x104 turns Submit Previous Answers v Correct Correct answer is shown. Your answer 12500 turns was either rounded differently or used a different number of significant figures than required for this part. Part B No energy is lost in an ideal transformer, so the output power Pout from the secondary coil equals the input power Pn to the primary coil. Suppose a neighborhood transformer delivers 210 A at 120 V. What is the current in the 15000 V line from the substation? Express your answer with the appropriate units. • View Available Hint(s) ? I; = 1.84 A Submit Previous Answers

Electricity is distributed from electrical substations to neighborhoods at 15000 V. This is a 60 Hz ocillating (AC) voltage. Neighborhood transformers, seen on utility poles, step this voltage down to the 120 V that is delivered to your house. How many turns does the primary coil on the transformer have if the secondary coil has 100 turns? • View Available Hint(s) nprim = 1.3x104 turns Submit Previous Answers v Correct Correct answer is shown. Your answer 12500 turns was either rounded differently or used a different number of significant figures than required for this part. Part B No energy is lost in an ideal transformer, so the output power Pout from the secondary coil equals the input power Pn to the primary coil. Suppose a neighborhood transformer delivers 210 A at 120 V. What is the current in the 15000 V line from the substation? Express your answer with the appropriate units. • View Available Hint(s) ? I; = 1.84 A Submit Previous Answers