Transfer of electrical energy from one circuit to another without the aid of electrical connections

Question

BlackTom AI · Accepted Answer

Question restatement: Transfer of electrical energy from one circuit to another without the aid of electrical connections.
Option: is called induction.
Analysis: Induction refers to the process by which a changing magnetic field induces an electromotive force (and hence current) in a nearby circuit without a direct electrical connection. This is the classic mechanism behind transformers and wireless power transfer models that rely on magnetic coupling. 
Reason this is correct: The phrase 'without the aid of electrical connections' points to a non-contact energy transfer mechanism, which is exactly what electromagnetic induction entails—energy moves through the magnetic field rather than through a physical conductor. The induced current in a secondary circuit arises due to the changing magnetic flux from the primary circuit, satisfying the definition of induction. 
Why other interpretations (if considered) would be incorrect: If one thought energy transfer required direct wiring, that would imply conduction, not induction. If one imagined energy moving through a static field without change, that would fail to produce induction, which requires a changing magnetic field. If a different term like 'radiation' were used, it would describe energy transfer via electromagnetic waves, which is a broader concept and not the specific non-contact energy transfer mechanism that relies on magnetic coupling between circuits, as in induction. Since the provided option explicitly states 'is called induction,' it aligns with the canonical term for non-contact energy transfer via changing magnetic flux.

AMT&101 36393 Test - Basic Electricity

Transfer of electrical energy from one circuit to another without the aid of electrical connections

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