Which statement best describes the difference between an insulator and a coductor

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%