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

Question

BlackTom AI · Accepted Answer

Question restatement: The prompt asks about the transfer of electrical energy from one circuit to another without the aid of electrical connections.

Option 1: 'is called induction.' This aligns with the concept of electromagnetic induction, where a changing magnetic field links two circuits and transfers energy without a direct electrical connection, such as in transformers or wireless power transfer principles. The reasoning is that mutual inductance or transformer action enables energy transfer through magnetic coupling rather than a physical conductor.

Option 2: 'is called capacitance.' Capacitance relates to the ability of a system to store electric charge between conductors and to the energy stored in the electric field of a capacitor. It does not describe energy transfer between circuits without connections; rather, it concerns charge storage between neighboring conductors or plates, typically involving a direct path through a dielectric, not energy transfer across a gap without any conductive link. Hence this option misidentifies the mechanism.

Option 3: 'can cause excessive arching and heat.' This statement describes potential adverse effects (arc damage and heating) that can occur under certain conditions, such as high voltage or poor insulation, not the general definition of how energy is transferred between circuits without a physical connection. It is a consequence or risk rather than the mechanism itself, making it an imperfect answer to the question asked.

Summary of why each option lands where it does: The concept of energy transfer without direct electrical contact is best captured by induction, which uses changing magnetic flux to couple energy between circuits. The capacitance option confuses charge storage with energy transfer across a gap, and the arching/heat option describes outcomes rather than the transfer mechanism. The reasoning emphasizes the physical principles behind wireless or non-contact energy transfer and distinguishes them from storage or failure scenarios.

AMT102 36396 Test - BE Practical Apps

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

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