Ask questions which are clear, concise and easy to understand.

Yogita Ingle 1 month, 1 week ago

 Amplitude Modulation (AM) Frequency Modulation (FM) First successful audio transmission was carried out in the mid-1870s Developed in 1930 by Edwin Armstrong, in the United States The radio wave is called a carrier wave and the frequency and phase remain the same The radio wave is called a carrier wave, but the amplitude and phase remain the same Has poor sound quality, but can transmit longer distance Has higher bandwidth with better sound quality The frequency range of AM radio varies from 535 to 1705 kHz The frequency range of FM is 88 to 108 MHz in the higher spectrum More susceptible to noise Less susceptible to noise

Akash Gupta 3 months, 3 weeks ago

This is the minimum amount of frequency which can emit electrons from metallic surface

Kirti Sharma 6 months, 2 weeks ago

Act of pushing

Shailendra Singh 6 months, 1 week ago

Low resistance wire

Kirti Sharma 6 months, 2 weeks ago

Act of pushing

Yogita Ingle 6 months, 4 weeks ago

Transformers

• A transformer is a device that changes voltage  from one value to another.
• Power at the input end  is equal to the power at the output end.
• Only the voltage will increase or decrease.

Principle:-

Transformers work on the principle of Mutual induction.

Mutual Induction :- Suppose there are 2 inductors if some current flows through coil(1) ,there will be change in the current as a result there will be change in the magnetic flux, as a result there will be  change in the magnetic flux in the coil (2) and because of which emf is induced in the coil(2).

Yogita Ingle 6 months, 4 weeks ago

Transformers

• A transformer is a device that changes voltage  from one value to another.
• Power at the input end  is equal to the power at the output end.
• Only the voltage will increase or decrease.

Principle:-

Transformers work on the principle of Mutual induction.

Mutual Induction :- Suppose there are 2 inductors if some current flows through coil(1) ,there will be change in the current as a result there will be change in the magnetic flux, as a result there will be  change in the magnetic flux in the coil (2) and because of which emf is induced in the coil(2).

Yogita Ingle 6 months, 4 weeks ago

Transformers

• A transformer is a device that changes voltage  from one value to another.
• Power at the input end  is equal to the power at the output end.
• Only the voltage will increase or decrease.

Principle:-

Transformers work on the principle of Mutual induction.

Mutual Induction :- Suppose there are 2 inductors if some current flows through coil(1) ,there will be change in the current as a result there will be change in the magnetic flux, as a result there will be  change in the magnetic flux in the coil (2) and because of which emf is induced in the coil(2).

Anikat Kumar 6 months, 4 weeks ago

Aapko kya

White Fox 7 months, 1 week ago

We cannot explain this concept with newton's gravitational force law since he itself doesnt know that answer because he strongly believed that force is something that push and not a pull and no other physicst also cannot answer this question for decades until the real hero come into play, it is albert einstein who proposed that space and time are two face of same coin and made that gravity is nothing but it is due to the curvature of spacetime fabric which is four dimesional plane where all mass object could the spacetime and such that the space pushes us towards the earth

Yogita Ingle 7 months, 3 weeks ago

Charge of electron,{tex} q_1=-1.6\times 10^{-19}\ C{/tex}

Charge of proton, {tex}q_2=+1.6\times 10^{-19}\ C{/tex}

Distance between them,{tex} r=0.8\times 10^{-15}\ m{/tex}

Coulomb's force is given by :

{tex}F=k\dfrac{q_1q_2}{r^2}{/tex}

{tex}F=9\times 10^9\times \dfrac{1.6\times 10^{-19}\ C\times 1.6\times 10^{-19}\ C}{(0.8\times 10^{-15}\ m)^2}{/tex}

{tex}F=360\ N{/tex}

Hence, the force between the proton and electron is 360 N and it is attractive in nature.

Harkirat Sandhu 7 months, 3 weeks ago

Physics is Fundamental study of nature.

Yogita Ingle 8 months ago

Wheatstone bridge

• Wheatstone bridge is a special arrangement of resistors as shown in the figure.
• There are 4 resistances R1,R2,R3and R4 arranged in such a manner thatthere is a galvanometer placed between the points B and D.
• The arm BD is known as galvanometer arm. AC is known as battery arm.
• And circuit is connected to the battery across the pair of diagonally opposite points A and C.
• According to Wheatstone bridge principle:-
• If (R1/R2)=(R3/R4), then Bridge is said to be balanced.
• If the bridge is balanced there is no current flowing through the galvanometer arm. Kanhyia Raj 8 months, 1 week ago

Faraday's law had been discovered and one aspect of it (transformer EMF) was formulated as the Maxwell–Faraday equation later. The equation of Faraday's law can be derived by the Maxwell–Faraday equation (describing transformer EMF) and the Lorentz force (describing motional EMF). The integral form of the Maxwell–Faraday equation describes only the transformer EMF, while the equation of Faraday's law describes both the transformer EMF and the motional EMF.

Dhruv Negi 7 months, 2 weeks ago

If a body A excert some force (F) on the body B then the B also excert (-F) force on A . This is the Newton's 3rd law of motion

Sahil Kumar 7 months, 3 weeks ago

Every action there is equal and it's opposite reaction

Kanhyia Raj 8 months, 1 week ago

Every reaction is opposite reaction this is called newton 3rd law

Kanhyia Raj 8 months, 1 week ago

Like charge reple and unlike charge attract each other

Kanhyia Raj 8 months, 1 week ago

Negative and positive

Babul Kumar 8 months, 2 weeks ago

Like charges repel each other and unlikecharges attract each othet.2.charge is additive in nature

Babul Kumar 8 months, 2 weeks ago

The process in which find unknown resistance in CKT

Kajal Kumar 9 months ago

What is Wheatstone bridge

Babul Kumar 8 months, 2 weeks ago

3/4

Mushtaq Ahmad Itoo 9 months, 1 week ago

Define elecrostatics

Md Afzal 9 months ago

Electric path b/w 2 . terminal in circuit in terms of potential difference when the terminals at the element connected to the wire gets its potential diff becomes o and the element is said to be short circuit.

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