SP8f Transformers and energy

Question 1

What is the law of conservation of energy?

Answer 1

energy cannot be created or destroyed, it can only be transferred from one form to another.

Question 2

Power = ?

Answer 2

current x potential difference

Question 3

What is power in primary coil equal to?

Answer 3

power in secondary coil (assuming a transformer is 100% efficient)

Question 4

What is the power equation for transformers?

Answer 4

VpIs = VsIp