Match the correct ones from the following​

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?