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Maximum value of any quantity is known as
Magnitude
Impedance
Amplitude
None of above
Amplitude
In AC theory, the amplitude (or peak value) represents the maximum displacement or intensity of a periodic wave from its zero baseline. It defines the maximum positive or negative value reached by the instantaneous quantity during one full cycle.
In AC theory, the amplitude (or peak value) represents the maximum displacement or intensity of a periodic wave from its zero baseline. It defines the maximum positive or negative value reached by the instantaneous quantity during one full cycle.
v(t)=VmтАЛsin(╧Йt) тАФ Instantaneous value of sinusoidal voltage where VmтАЛ is the amplitude
VrmsтАЛ=2тАЛVmтАЛтАЛ тАФ Relation between RMS value and amplitude for a sine wave
In a sinusoidal waveform defined by v(t)=VmтАЛsin(╧Йt+╧Х), the term VmтАЛ represents the amplitude. This value is dictated by the energy source or system capacity and is distinct from the instantaneous value, which varies continuously with time.
Amplitude is the peak value of a wave, whether it is voltage, current, or any oscillating quantity.
For symmetric waveforms, the peak-to-peak value is double the amplitude.
Amplitude is independent of the time at which the measurement is taken.
It is a fundamental parameter in signal processing and power systems.
Used to define the insulation stress level in power systems.
Essential for calculating the crest factor of a signal.
Does not provide information about the total energy delivered by the waveform (RMS value is used for that).
Sensitive to waveform distortion (non-sinusoidal signals require more complex definitions).
Defining voltage ratings for electrical machinery.
Signal modulation in communication engineering (AM).
Audio engineering for volume control.
Magnitude generally refers to the absolute size or scale of a vector or scalar, while amplitude is specific to periodic oscillations.
Impedance is the opposition to current flow in an AC circuit (Z=R+jX), not a measure of wave height.
C is correct тАФ Amplitude denotes the maximum value reached by a periodic quantity from its zero position.
Always distinguish between Peak (Amplitude), RMS, and Average values; for a pure sine wave, remember the factor 1/2тАЛтЙИ0.707 relating RMS to Amplitude.