The transformer works on the principle of:

• A. Mutual capacitance
• B. All of these
• C. Mutual induction
• D. None of these

Answer: (C)

Transformer is static device.
two or more stationary electrical circuit mutually linked by magnetic circuit.
assumptions of ideal transformer:
1. there are no losses.
2. whole magnetic flux constant no leakage.
3. permeability of core is infinite.