CBSE > Class 12 > Physics | CBSE Board | Homework Help

Electric charge is physical property of matter that causes it to experience that causes it to exoerience a force when placed in an electromagnetix field.The cause of charging is due to loss or gain of electrons. Loss of electron = +vecharge Gain of electron = -ve charge Mass is the amont of matter present in a substance. According to special relativity(Einstien's theorem),there are 2 kinds of masses: 1.rest mass( invariant mass) 2.relativistic mass(increases with velocity)

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Mansi Kabdal 7 years, 2 months ago

Positive charge and negative charge

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What is 1 coloumb

Posted by Anmol Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Sneha Singh 7 years, 2 months ago

1 coulomb is a charge that appears on 6.25×10^18 electrons 1C=ne 1C=6.25×10^18 ×1.6×10^-19

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Amit Singh 7 years, 2 months ago

2 . When we take any object or energy from infinity is called potential and use of this energy or object is called potential energy

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Pratik Bhatiya 7 years, 2 months ago

What is potential energy

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Name the s i unit of charge

Posted by N S Kumbar N S Kunbar 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Mansi Kabdal 7 years, 2 months ago

Coloumb

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Sanju Kumar 7 years, 2 months ago

Coulamb

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if pdv applied across a conductor is increased to 2v, how will the draft velocity of electrons change.

Posted by Eshika Soni 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Sneha Singh 7 years, 2 months ago

Drift vel. Also increases

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A car moves with a speed of 30 kilometre per hour for half an hour, 25 kilometre per hour for 1 hour and 40 kilometre per hour for 2 hours. Find average velocity

Posted by Pawan Singh Sanjeev 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What should I do to not to forget the numerical of physics after doing them once or twice

Posted by Divyansh Rathore 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Anvesha Kumari 7 years, 2 months ago

When concept is clear and also by practice

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J K 7 years, 2 months ago

If your concepts are clear so you will never forget them and you can solve them.

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Charge is a scalor quantity than why electric field are vector quantity

Posted by Saif Nawaz 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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if an equilateral triangle with side a having charges q , q and -q then how to calculate the force exp. by -q

Posted by Vinay Gurjar 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derive Coulomb's law in electrostatics

Posted by Aaaa Kkk 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Whether the topic 'Magnetic field at a point on the axis of loop' is in the syllabus or not?

Posted by Unknown Student 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Plz provide previous 10 years question in topic wise

Posted by Sudarshan Aansh 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Devashish Agrawal 7 years, 2 months ago

Check in this app only

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Define capacitance???

Posted by Satyam Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Rishabh Sahu 7 years, 2 months ago

Ratio of charge stored is to voltage drop across capacitor plates , which is a device that can store charge. It can only store charge till dielectric strength is not crossed , hence the term capacity to store charge is not correct.

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Devashish Agrawal 7 years, 2 months ago

Capacity to store charge

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What are the outcomes of hans orested experiment?

Posted by Tushar Tanwar 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How will you increase the sensitivity of potentiometer

Posted by Mani Brar 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Kumood Maurya 7 years, 2 months ago

By increasing the length...

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Defination of biot swarts law

Posted by Tanveer Malik 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Krishanpal Singh Rathore 7 years, 2 months ago

The Biot-Savart Law is an equation that describes the magnetic field created by a current-carrying wire, and allows you to calculate its strength at various points. It looks like this. Using the Biot-Savart Law requires calculus, but we can use a simpler version of the law for a perfectly straight wire.

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Ncert class science activity 11.4

Posted by Payal Sharma 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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An electron enter a magnetic field of 10^-2T with a velocity of 10^7 ms^-1 describe a circle of radius 6×10^-3 calculAte e/m of the electron

Posted by Ankit Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define gauss's law.

Posted by Anu Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Baishnavi Rathoer 7 years, 2 months ago

The net electric flux through any closed surface is equal to 1 by E● times the net charge enclosed by that surface

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why does bending of a wire not affect its internal resistance

Posted by Sejal Vagh 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Swati Dave 7 years, 2 months ago

Since the resistance of a wire is only dependent on the length, criss section area, and resistivity that's why bending don't cause any change in internal resistance

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Sneha Singh 7 years, 2 months ago

I think .'.resistance is not depend on shape /bending .. So that why bending of wire not affected its internal resistance

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Derivation of coulombs law

Posted by Tushar Sahu 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Please suggest me some project topics of physics for class 12

Posted by Inder Dhillon 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Devashish Agrawal 7 years, 2 months ago

Piezoelectric charge Rectifier Logic gate Digital counter

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A capacitor of 60 microcolumb when connected across a battery. When the gap between the plates is filled with a dielectric, a charge of 120microcolumb flows through the battery. The dielectric constant of material inserted is

Posted by Bipin Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Plzz define physics

Posted by Siddharth Chaturvedi 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Sneha Singh 7 years, 2 months ago

Check out ur class 11 book (ch-1)

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The dimension formula of 1/2Bto the power 2 Unot

Posted by Kumar Rohit 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why electrostatic field lines never makes loop?

Posted by Anu Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

5 answers

Devashish Agrawal 7 years, 2 months ago

Because electricfield lines can never emitts from negative terminal

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Swati Dave 7 years, 2 months ago

Consider two spheres , having +ve and _ve charge. Now the electric field lines are from the sphere havinge positive charge to the sphere having negative charge. Since there exist no efl inside the sphere , no close loop is possible.

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Ishika Natasha 7 years, 2 months ago

Which is not possible

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Ishika Natasha 7 years, 2 months ago

Beacause it always move from positive to negative point but to make closed loop they have to move negative to positive which does not happened

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Riya Singhal 7 years, 2 months ago

Because they are conservative in nature

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What is the value of efsilent node