Neon signs (which often contain gases other than neon) use high voltage to excite gaseous atoms that then give off a characteristic glow.  When plugged into a wall outlet (120 V AC), a typical neon sign transformer delivers 400 W AC at a voltage of 18 kV rms.  The primary coil has 400 turns. 1. First, what is the number of turns in the secondary to achieve this high voltage?  Give your answer to 2 significant digits. 2. Next, if the transformer is ideal, what is the rms current in the primary? Give you answer in amps with 2 significant digits. 3. Finally, what is the rms current in the secondary? Give your answer in milli-amps with 2 significant digits.

Neon signs (which often contain gases other than neon) use high voltage to excite gaseous atoms that then give off a characteristic glow.  When plugged into a wall outlet (120 V AC), a typical neon sign transformer delivers 400 W AC at a voltage of 18 kV rms.  The primary coil has 400 turns.

1. First, what is the number of turns in the secondary to achieve this high voltage?  Give your answer to 2 significant digits.

2. Next, if the transformer is ideal, what is the rms current in the primary? Give you answer in amps with 2 significant digits.

3. Finally, what is the rms current in the secondary? Give your answer in milli-amps with 2 significant digits.