Final answer:
In a transformer, the voltage at the output coil depends on the turns ratio and the voltage at the input coil. The current in the light connected to the transformer depends on the resistance of the light and the voltage applied to it.
Step-by-step explanation:
In a transformer, the voltage at the output coil is determined by the ratio of the number of turns in the secondary coil to the number of turns in the primary coil. This is known as the turns ratio. If the voltage at the input coil is known, the voltage at the output coil can be calculated using the turns ratio formula:
Voutput = Vinput * (Noutput / Ninput)
Where Voutput is the voltage at the output coil, Vinput is the voltage at the input coil, Noutput is the number of turns in the secondary coil, and Ninput is the number of turns in the primary coil.
The current in the light connected to the output coil depends on the resistance of the light and the voltage applied to it. Using Ohm's law, the current can be calculated using the equation:
I = V / R
Where I is the current, V is the voltage, and R is the resistance.