The set up for a science experiment uses a battery, light bulb and copper wire. Which material can be connected to copper wire and a battery to light up the bulb?
aluminum foil
rope
plastic straw
nylon string
An electrician wears rubber gloves when working on electrical wiring. What is the purpose of the rubber gloves?
to allow more electrons to pass through
to protect hands from being punctured or cut
to increase the temperature of the hands
to prevent electric shock by restricting the flow of electrons
to prevent electric shock by restricting the flow of electrons
Why is metal a good conductor?
Its rigid structure creates a strong bond among electrons.
It has a solid and compact material.
It has a higher restriction for moving electrons.
Its valence electrons flow freely through the material.
To light up the bulb in the science experiment, the copper wire needs to be connected to a material that can conduct electricity. Out of the given options, aluminum foil is the material that can be connected to the copper wire and battery to light up the bulb. Conductors like aluminum foil allow the flow of electrons from the battery to the bulb, completing the circuit and causing the bulb to light up.
The purpose of an electrician wearing rubber gloves when working on electrical wiring is to protect their hands from being punctured or cut. The rubber gloves provide insulation and act as a barrier between the electrician's hands and the live electrical components. This helps prevent the electrician from getting injured by accidental contact with exposed wires or voltage sources.
Metal is a good conductor because its valence electrons can flow freely through the material. In metals, the outermost electrons of atoms are loosely bound and are able to move easily from one atom to another. This flow of electrons allows metals to conduct electricity efficiently. Additionally, metals have a solid and compact material structure, which further facilitates the movement of electrons and their ability to transfer energy or electric charge.