Transfer of electric energy from one circuit to another without aid of electrical connections is called

• A. Conduction
• B. Transformer
• C. Induction
• D. Reflection

Answer: (C)

The idea being tested is energy transfer through a changing magnetic field without a physical connection. When current in one circuit changes, it creates a varying magnetic field that threads through a nearby circuit. This changing magnetic flux induces an electromotive force in the second circuit, driving current and delivering energy without a direct wire link. That’s electromagnetic induction. Conduction would require a metal path connecting the circuits, and a reflection describes waves bouncing back rather than transferring energy between circuits. A transformer is the practical device that uses induction to transfer energy (and to change voltage), but the fundamental mechanism is induction itself.