Please answer both A and B. The question is in the link http://i.imgur.com/blSOT

Question

Please answer both A and B. The question is in the link

http://i.imgur.com/blSOTk4.png

Thank you

A step-up transformer has 125 turns on the primary coil and 500 turns on the secondary coil. If this transformer is to produce an output of 5300 V with a 12-mA current, what input current and voltage are needed? input current A voltage V The mars rover was developed on the surface of Mars in July 1997. At one point during its subsequent mission, radio signals took about 19 min to travel from Earth to the rover. How far was Mars from the from Earth at that time? m

Explanation / Answer

a)

i1 = (N2/N1) i2 = (500/125) * (12) = 48 mA

b)

V1 = (N1/N2) V2 = (125/500) * (5300) = 1325 V

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d = c t = (3e8) * (19*60) = 3.42 x 10^11 m

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