Table of Contents

## What is the W in sin wt?

The angular velocity w of the motion is defined in radians per second as the angle q moved through per unit time, and is related to the FREQUENCY f by the equation: w = 2pf. The displacement d, whose maximum is the AMPLITUDE A, may be expressed as: d = A sin q = A sin wt = A sin (2pft)

### What does the Omega W in V sin wt mean?

Now T is the time period of revolution,i.e, the time taken by the particle to move once around the complete circular path. So the tangential speed , V=distance/time. =2pir/T. And then we have ‘w'(omega) which is the angular speed of the rotating particle. This means the angle through which it rotates in unit time.

**Why AC current is sinusoidal in nature?**

The sinusoidal current comes from the amount of electrons – this just as a sidenote. One of the reasons we mainly use AC is due to the fact of easy transformation. In the early (really early) beginning everything started with DC, but when transmitting DC the losses are way higher then with high voltage AC.

**What is VM in AC?**

Vm: Vm generally refers to the peak/max voltage on your waveform.

## What is VM voltage equation?

It means that alternating voltage available has the same heating effect as 230V DC. The equation of this alternating voltage: v = Vm Sin θ

### What is sinusoidal AC?

A sinusoidal alternating current can be represented by the equation i = I sin ωt, where i is the current at time t and I the maximum current. In a similar way we can write for a sinusoidal alternating voltage v = V sin ωt, where v is the voltage at time t and V the maximum voltage.

**When the voltage V VM sin wt applied to the pure capacitance what will be the equation of current?**

v = LImW sin ( wt + ~) . This equation may be written as v = V m sin (wt + ~). The voltage leads the current by 90° in an inductor. of current is a maximum; that is, when the current itself is zero.

**Is AC current sinusoidal?**

The term AC or to give it its full description of Alternating Current, generally refers to a time-varying waveform with the most common of all being called a Sinusoid better known as a Sinusoidal Waveform. Sinusoidal waveforms are more generally called by their short description as Sine Waves.

## What does VM mean in circuits?

volt per meter (V/m)

### Why do we use sin(wt) instead of sin(t)?

Instead of writing the sine function as sin (t), its better to write it as sin (wt) because using sin (t) we have to calculate the time period or the frequency the sine function separately by using the formula ” ( (2*p)/co-efficient of t).” But by using sin (wt) we can easily calculate the frequency of the sine function by using w as “w=2*pi*f.”

**What is the difference between V and v sin?**

The only difference is that letter V is used instead of Letter I. V = Vo sin @ , V = sin wt, V = Vo sin 2πft. That is all. An a.c. voltage is represented by the equation, V = 4Sin900πt.

**What is the equation for sin wt in a resistive circuit?**

R = (Vo Sin wt)/ (Io Sin wt). ( Sin wt will cancel sin wt, then we will get) In a resistive circuit, the current is in phase with the voltage. This means that current and voltage start their journey from the same point at the same time, reach their maximum and minimum points at the same time.

## What is the value of V in ohm’s law?

V = Vo Sin wt, and I = Io Sin wt . we will put (substitute) this into the ohm’s law that we stated above. R = (Vo Sin wt)/ (Io Sin wt). ( Sin wt will cancel sin wt, then we will get) In a resistive circuit, the current is in phase with the voltage.