Resistor. The answer is a resistor. They do not transmit electricity.
This interaction is known as <em>constructive interference</em>. It's a result of linear superposition.
25 volts
Explanation:
Use Ohm's law to find the potential drop:
V = IR
= (0.5 A)(50 ohms)
= 25 volts
When a perfume bottle is opened, some liquid changes to gas and the fragrance spreads around the room because gases do not have a definite volume.
Hope this helps!
