Which term describes the relationship where voltage is induced in one coil due to a changing current in another coil?

Which term describes the relationship where voltage is induced in one coil due to a changing current in another coil?

• A. Inductive coupling
• B. Capacitive coupling
• C. Mutual inductance
• D. Direct current transfer

Answer: (C)

The relationship where voltage is induced in one coil due to a changing current in another coil is defined as mutual inductance. This phenomenon occurs because the changing magnetic field produced by the current flowing through the first coil affects the second coil, inducing a voltage across it. Mutual inductance is a fundamental principle in the operation of transformers and various types of inductors in alternating current (AC) circuits. It highlights the ability of one coil to influence another coil through electromagnetic fields, allowing for energy transfer and signal modulation in electrical systems. In contrast, inductive coupling refers more broadly to any coupling that relies on inductance, but it does not focus specifically on the voltage induced due to proximity of two coils with changing currents. Capacitive coupling relates to the transfer of electrical energy between circuits through capacitance rather than inductance, making it fundamentally different. Direct current transfer does not involve any changing magnetic fields and therefore does not involve the principles of mutual inductance or inductive coupling.

The relationship where voltage is induced in one coil due to a changing current in another coil is defined as mutual inductance. This phenomenon occurs because the changing magnetic field produced by the current flowing through the first coil affects the second coil, inducing a voltage across it.

Mutual inductance is a fundamental principle in the operation of transformers and various types of inductors in alternating current (AC) circuits. It highlights the ability of one coil to influence another coil through electromagnetic fields, allowing for energy transfer and signal modulation in electrical systems.

In contrast, inductive coupling refers more broadly to any coupling that relies on inductance, but it does not focus specifically on the voltage induced due to proximity of two coils with changing currents. Capacitive coupling relates to the transfer of electrical energy between circuits through capacitance rather than inductance, making it fundamentally different. Direct current transfer does not involve any changing magnetic fields and therefore does not involve the principles of mutual inductance or inductive coupling.