V(rms): Definition & Difference Explained

  • Thread starter Thread starter Sparkyian
  • Start date Start date
AI Thread Summary
V(rms), or root mean square voltage, is a measure of the effective voltage of an alternating current (AC) signal, representing the equivalent direct current (DC) value that delivers the same power. The difference between V(rms) and V(max) lies in their definitions; V(max) is the peak voltage of the AC signal, while V(min) indicates the lowest voltage point. V(rms) is calculated as V(max) divided by the square root of 2 for a sinusoidal waveform. Understanding these distinctions is crucial for accurately assessing electrical power in circuits. For further details, refer to the linked Wikipedia article on root mean square.
Sparkyian
Messages
9
Reaction score
0
Hi, can someone please explain to me in detail what the definition of V(rms) is and what is the difference between V(rms) and V(max), V(min).
 
Physics news on Phys.org
Thank you.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Is the RMS Mean Free Path Equal to the Mean Free Path?
Replies
9
Views
2K
What Should Manufacturers Specify: Peak Power or Average Power in Audio Systems?
Replies
1
Views
2K
Solving for RMS current of a resistor, help?
Replies
6
Views
2K
Why Does My Calculation of Maxwellian Gas Velocity Yield an Incorrect Result?
Replies
7
Views
1K
Inductance and Instantaneous Current
Replies
2
Views
2K
Calculating RMS Speed of Helium & Oxygen Gas at 260K
Replies
6
Views
5K
Evaluating minimum and maximum values with calculations
Replies
5
Views
1K
Average back emf induced in coil
Replies
5
Views
2K
Already answered, just need quick piece of advice
Replies
4
Views
1K
Solve RLC Series Circuit: V, f, L, C Given
Replies
16
Views
4K

Hot Threads

Recent Insights

Back
Top