# 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 (S_{2}) 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 +90^{o}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