Faraday's law states that the induced EMF is proportional to the rate of change of magnetic flux.

Average induced emf = -ΔΦ/Δt = -(0.2 - 0.5)/2 = 0.15 V = 150 V.

An induced EMF is generated when there is a change in magnetic flux through a coil.

In a circuit with an inductor, the current increases gradually due to the inductor's opposition to changes in current.

At resonance in a series RLC circuit, the impedance is at a minimum.

The turns ratio is 100:200, which simplifies to 1:2.

The turns ratio is 2:1, as the primary has twice the number of turns compared to the secondary.

If the primary coil has more turns than the secondary coil, it is a step-down transformer.

In an inductive circuit, the current lags behind the voltage by 90 degrees.

In an inductor, the current lags the voltage by 90 degrees.

In an inductive circuit, the current lags the voltage by 90 degrees.

In a purely inductive AC circuit, the current lags the voltage by 90 degrees.

Resonance in an RLC circuit occurs when the inductive reactance equals the capacitive reactance, resulting in maximum current at a specific frequency.

At resonance, the impedance in an RLC circuit is at a minimum.

At resonance in an RLC series circuit, the impedance is equal to the resistance.

Electromagnetic induction was discovered by Michael Faraday.

The self-inductance of a coil depends on the number of turns, area of cross-section, and length of the coil.

The induced EMF doubles if the speed of the magnet moving through the coil is doubled.

The induced emf increases when the rate of change of magnetic flux increases, according to Faraday's Law.

Inductive reactance is directly proportional to frequency; as frequency increases, inductive reactance increases.

Inductive reactance increases with the frequency of AC.

Increasing the frequency of an AC source increases the inductive reactance.

Inductive reactance increases with frequency, as X_L = 2πfL.

Increasing the number of turns in a coil increases its inductance.

The induced EMF in a coil is given by the formula E = -dΦ/dt, where Φ is the magnetic flux.

The formula for inductive reactance is X_L = 2πfL, where f is the frequency and L is the inductance.

A choke is used to decrease current in an AC circuit by providing inductive reactance.

The inductance of a coil is determined by the length of the wire, the number of turns, and the material of the core.

Reactance (X_L) = 2πfL = 2π(50)(0.1) = 31.4 Ω.

The reactance of an inductor in an AC circuit is given by the formula X_L = 2πfL.