\(Q=\frac{F_{0}}{F_{3dB}}\) How does sharpness of resonance depend on damping? Inversely related to the fraction of the energy in an oscillating system lost in one oscillation cycle. \(Q=\frac{\omega L}{R}\) Q-meter is an instrument designed for measuring Quality factor (Q) of a coil as well as for the measurement of inductance, capacitance, and resistance of an electric circuit at radio-frequency. They are inversely proportional for the coil quality and are calculated from the ratio of reactance to ohmic resistance. Quality factor (Q) or coil Q-factor is a dimensionless unit for the losses of a coil, quartz, or a resonator. Coils easily pass direct current but act as a resistor to alternating current. For coils this refers to the ohmic losses of the coil-wire. For an intraocular coil, the Q factor must be enhanced in order to minimize the power loss in the device as well as to maximize the transfer efficiency of power telemetric link. Applications of Q … What is Q factor of coil? Q-factor, or quality factor, characterizes how under-damped a tuned LC resonator circuit of the antenna coil is. All other factors being equal, greater coil area (as measured looking lengthwise through the coil, at the cross-section of the core) results in greater inductance; less coil area results in less inductance. Q-meter is also known as RLC meter. Technically, it is the ratio of the stored energy of the LC resonator circuit to discharged energy. Contents hide 1. Q Factor = 1/ Power Factor=1/Cosθ= Z/R … (Where Power Factor Cosθ = R/Z) This behavior is called inductive reactance. Question is ⇒ To increase Q factor of a coil, the wire should be, Options are ⇒ (A) long, (B) thin, (C) thick, (D) long and thin, (E) , Leave your comments or Download question paper. The sharpness of resonance increases with an increase in damping and decreases with a decrease in damping. Q is inversely related to the range of frequency over which the system will exhibit resonance. Q1. Calculate the Quality Factor of a coil or capacitor with the Q Factor Calculator and learn on the go with the integrated live example The quality factor of a resonator is related to the bandwidth and is a measure of its resonant frequency response. The Q factor of a coil, sometimes called the unloaded Q factor, is the ratio of the energy stored in the coil to the energy dissipated in the resistance of the wire. The reciprocal value of quality is the loss factor (d). Explanation: Greater coil area presents less opposition to the formation of magnetic field flux, for a given amount of field force (amp-turns). Generally, the quality of the coil will be better if its resistance R-value is low. The enhancement of the Q factor can be achieved by increasing the number of turns (n) and the thickness of the conductive layer. However, although the coil is a conductor, the wire winding has certain resistance components (R). The higher the frequency of the alternating current, the higher the inductive reactance. Previous question Next question. Quality Factor of Inductor: Every inductor has a small amount of resistance in addition to its inductance. Opposite of the Power factor is called the Q-Factor or Quality Factor of a Coil or its figure of merit. Q factor for a coil is defined for a given frequency as the ratio of inductance L to the resistance R of a coil. Use this online inductor Q factor calculator to calculate inductor quality factor (Q factor) within the fractions of seconds. To increase Q factor of a coil, the wire should be: A. Circuit Diagram of Q-meter 2. "Q" stands for "Quality Factor". It is based on a ratio of the resonant frequency (i.e., “fc”) and its 3dB bandwidth (i.e., “B”). The quality factor (Q) applies to any resonant circuit component; most often the quality factor of the coil determines the overall Q of the circuit. 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