Question

Which of the following will an electric bulb to lighten up if they are connected between $X$ and $Y$: An iron wire, a glass rod or a steel spoon?

Answer 1

1. Electricity can pass through conductors only.
2. When electricity flows in the circuit only then the bulb will light up.
3. In the given options glass rod is an insulator material hence electricity will not pass through it and the bulb will not lighten up.
4. In the given options iron wire and steel spoons are conductors of electricity and current will pass through them and the bulb will light up.

Hence the correct answer is An iron wire and a steel spoon.