A teacher makes use of the circuit diagram shown. The matching lamps X and Y are linked to a low voltage a.c. power supply through high resistance transmission wires. Both lamps are turned on. Lamp X is then turned off. Lamp Y remains on. What effect does this have on the voltage and the power delivered to lamp Y?
- Athe voltage supplied to lamp Y decreases; the power supplied to lamp Y decreases
- Bthe voltage supplied to lamp Y decreases; the power supplied to lamp Y stays the same
- Cthe voltage supplied to lamp Y increases; the power supplied to lamp Y increases
- Dthe voltage supplied to lamp Y increases; the power supplied to lamp Y stays the same