Questions: Questions about …

Electric Bulbs
Imagine you are in a room with 3 switches. In an adjacent room there are 3 bulbs (let’s say in electric lamps which are on a regular table) - all the bulbs are off at the moment, each switch belongs to one bulb. It is impossible to see from one room to another. How can you find out which switch belongs to which bulb, if you may enter the room with the bulbs only once?

Find out which switch belongs to which bulb - identify all 3 switches (so find out what bulbs are switches 1, 2 and 3 connected to)

Magnet
This question is from Physics.

“Magnet” is one of the logic questions, or logic puzzle published in Martin Gardner’s column in the Scientific American.
You are in a room where there are no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify this magnet?