p6 9.5

• Electromagnetic induction refers to the process in which the electromotive force (emf) and current are induced as a result of changing magnetic flux.
• Inductance refers to an electrical conductor’s capacity to oppose a change in current that passes through it
• In a circuit, the component responsible for this process is called an inductor. It is usually represented by the symbol...
• Mutual inductance is the term for placing two circuits near each other such that the change in electric current in the first will result in a drop or loss of voltage in the second
• The symbol for inductance is the capital letter L, in honor of the Russian physicist Emil Lenz, who formulated Lenz’s Law.
• Its SI unit is the henry (H), named so after the American scientist Joseph Henry, who discovered the phenomenon of inductance while conducting experiments on electromagnetism.
• In a DC circuit, electric current flows in directly in one direction
• In an AC circuit, current switches directions, at times alternating forward and backward and reversing its direction across the circuit
• In a closed circuit, inductors store electrical energy in the form of magnetic energy, or the energy present in a magnetic field.
• ●A capacitor enables the storage of energy in the form of an electric field.
• Capacitors and inductors complement each other, such that a circuit that consists of both inductive and capacitive components is called a tuned circuit
• The movement of current in an LC circuit is referred to as electrical oscillation, the process of which resembles the mechanical oscillation observable in a vibrating spring-mass system, as shown below:
• The Conservation of Energy will tell us that the system’s total energy will remain the same
• In a DC circuit, inductance and resistance are directly proportional
• ●The voltage remains constant. These relationships are visualized in the graph.
• In an AC circuit, the frequency refers to the number of cycles or the  rate of the current change per second. It is measured in hertz (Hz).
• ●The measure of this opposition or resistance in an AC circuit is also known as electrical impedance.
• Inductance refers to an electrical conductor’s capacity to oppose a change in current that passes through it
• In a circuit, the component responsible for this process is called an inductor and is commonly a coil, a wire helix, or a solenoid
• Mutual inductance is the term for the juxtaposition of two circuits such that the change in electric current in the first will result in a drop or loss of voltage in the second.
• ●The symbol for inductance is the capital letter L. Its SI unit is the henry (H), which is equivalent to one kilogram meter squared per second squared per ampere squared.
• In a DC circuit, electric current flows only in one direction
• AC circuit, at times alternating forward and backward and reversing its direction across the circuit.
• In an LC circuit, an inductor stores energy in the magnetic field based on the electric current that flows through it.
• Conversely, a capacitor stores energy in the electric field generated between its conducting plates based on the potential difference across this separation distance
• ●The electrical oscillation of stored energy in an LC circuit resembles a oscillating mass-spring system.
• The opposition reaction of the inductor to the current in a DC circuit is exponential. An alternating-current (AC) circuit is similar to the DC circuit, except that it changes its polarity over time