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A television tube needs a high voltage to work properly, and uses 80 Watt of power when it's running. The power supplied to it from the secondary winding of a transformer; the primary winding is connected to the voltage source of 120 Volt (rms). (what is available at the receptacle on the wall.) When the tube is on, the tube draws 6.7 mA of current from the secondary windings.
a) Find what must be the ratio of the number of turns in the secondary to that in the primary windings, Ns/Np, of this transformer?
b) Find what must be the voltage in the secondary?
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