# How is path difference related to phase difference?

path difference is the difference in path traversed by the two waves , measured in terms of wavelength of the associated wave. It has a direct relation with phase difference. Phase difference decides the nature of interference pattern but phase difference is found out by path difference.
A.

### What is the phase difference between current and voltage?

When capacitors or inductors are involved in an AC circuit, the current and voltage do not peak at the same time. The fraction of a period difference between the peaks expressed in degrees is said to be the phase difference. The phase difference is <= 90 degrees.
• #### What causes current to lead voltage?

A voltage was applied across the inductor. This causes current to flow through it. So the current flowing through the inductor and the magnetic field established due to the current interact with each other to induce an EMF in the inductor, which opposes the applied voltage(effect opposes cause) according to Lenz's law.
• #### What is meant by a RL circuit?

A resistor–inductor circuit (RL circuit), or RL filter or RL network, is an electric circuit composed of resistors and inductors driven by a voltage or current source. A first-order RL circuit is composed of one resistor and one inductor and is the simplest type of RL circuit.
• #### How is path difference related to phase difference?

path difference is the difference in path traversed by the two waves , measured in terms of wavelength of the associated wave. It has a direct relation with phase difference. Phase difference decides the nature of interference pattern but phase difference is found out by path difference.
B.

### What is phase and phase difference?

Phase is the position of a point in time (an instant) on a waveform cycle. In sinusoidal functions or in waves, "phase" has two different, but closely related, meanings. One is the initial angle of a sinusoidal function at its origin and is sometimes called phase offset or phase difference.
• #### What is the phase wire?

The HOT WIRE OR PHASE WIRE is basically a phase conductor which is connected to supply mains. The materials used for PHASE WIRE is invariably ACSR( ALUMINIUM CONDUCTOR STEEL REINFORCED) OR COULD BE STRAIGHT OR STRANDED COPPER OR ALUMINIUM CONDUCTORS.
• #### What is path difference in physics?

The difference in distance traveled by the two waves is one full wavelength. That is, the path difference is 1 λ. When the path difference is one full wavelength, a crest meets a crest and constructive interference occurs. The wave from Source 2 (S2) travels a distance of 8 wavelengths to reach the same point.
• #### Is Path difference the same as phase difference?

path difference is the difference in path traversed by the two waves , measured in terms of wavelength of the associated wave. It has a direct relation with phase difference. whereas phase difference is the difference between some reference point in 2 waves. Its how much one wave is shifted from the other.
C.

### What is the phase difference between a sine and cosine wave?

Cosine Expression. The Cosine Wave, simply called “cos”, is as important as the sine wave in electrical engineering. The cosine wave has the same shape as its sine wave counterpart that is it is a sinusoidal function, but is shifted by +90o or one full quarter of a period ahead of it.
• #### What causes current to lead voltage?

A voltage was applied across the inductor. This causes current to flow through it. So the current flowing through the inductor and the magnetic field established due to the current interact with each other to induce an EMF in the inductor, which opposes the applied voltage(effect opposes cause) according to Lenz's law.
• #### What is the phase difference between the voltage and current at resonance?

Current in the capacitor will lead the applied voltage by 90 degrees. Since the current in the inductor and capacitor are 180 degrees out of phase of each other, the only current that flows in and out of the circuit is that of the resistor. In series circuits, current is the same through all components.
• #### Is the sine function even or odd?

Sine is an odd function, and cosine is an even function. You may not have come across these adjectives “odd” and “even” when applied to functions, but it's important to know them. A function f is said to be an odd function if for any number x, f(–x) = –f(x).

Updated: 6th October 2019