Question

why are insulators used on wires? *
○ to conduct electricity
○ to increase current
○ to prevent shocks
○ to heat the wire
which material is used in circuits for conductivity? *
○ glass
○ rubber
○ ceramic
○ aluminium
what do insulators do in technology? *
○ carry electricity
○ power devices
○ prevent unwanted current
○ heat circuits

Explanation:

1. Insulators do not conduct electricity, so they are used on wires to stop humans from coming into contact with live electrical current, avoiding electric shocks.
2. Conductors allow electricity to flow easily; aluminum is a metal and a good electrical conductor, while the other options are insulators.
3. Insulators have high electrical resistance, so they block unwanted electrical current from flowing where it is not intended.

Answer:

1. Why are insulators used on wires?

B. To prevent shocks

1. Which material is used in circuits for conductivity?

D. Aluminum

1. What do insulators do in technology?

B. Prevent unwanted current