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Electrostatic Force between two charged particles having charges q1 and q2 is given by F(vector) = kq1q2 (^r) (r^2) Where ^r denotes unit vector along an axis joining the 2 particles ,r is the distance between them and k is a constant of proportionality.

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Why electric field do not form closed loops?

Posted by Ravi Kumar 7 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Ravi Kumar 7 years, 4 months ago

What is it means "zero"??n

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Muskan Goel 7 years, 4 months ago

Bcoz it is discontinuous in nature i.e. starts from +ve and ends up on -ve charge

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Ravi Kumar 7 years, 4 months ago

I can't understand ur answer Plz explain it

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Sonia Lakhera 7 years, 4 months ago

May be zero

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ANSWER

1.6*-100000000000000000000

Posted by Subam Prasad 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

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Coulomb's law for electrostatic force between two point charges and Newton's law for gravitational force between two stationary point masses, both have inverse square dependence on the distance between charges/masses. (a) Compare the strength of these forces by determining the ratio of their magnitudes (i) for an electron and a proton (ii) for two protons. (b) Estimate the acceleration for electron and a proton due to electrical force of their mutual attraction when they are 1 angstrom apart.

Posted by Rohit Sharma 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Muskan Goel 7 years, 4 months ago

Answer of this question is in NCERT

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-two point charges of q1 and q2 of 10 to the power -8 and -10 to the power -8 respectively are placed 0.1m apart. calculate the electric field at point A

Posted by Gaurav Chugh 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Find value of theta for any distance r away from centre of dipole such that electric field is perpendicular to p vector that is dipole.

Posted by Anshu Deo 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Anshu Deo 7 years, 4 months ago

How can I solve it

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An object of lenght 5cm is placed at a distance 1m from concave mirror. If radius of curvature of mirror is 20cm. Size of image will be

Posted by Sumit Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Is it possible that like charge attract like charge?

Posted by Archie Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

3 answers

Rohit Singh 7 years, 4 months ago

Yes, let the first charge is big and the second charge is small then two like charges attract each other.

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Pankhuri Kumar 7 years, 4 months ago

Yes when charge are not equal

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Reyaz Anwar 7 years, 4 months ago

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Coulomb's law between multiple charge.define

Posted by Divya Bharti 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why electric field is Conservative in nature?

Posted by Riddhi Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Riddhi Singh 7 years, 4 months ago

I am asking for electric field and field is cleated by two charges + ve or -ve

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Anonymous A 7 years, 4 months ago

Because it can neither be created nor be destroyed

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Explain gauss law

Posted by Neha Kumari 7 years, 4 months ago

CBSE > Class 12 > Physics

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Two short magnets P&Q are placed one over another with their magnetic axis mutually perpendicular to each other. It is found that the resultant field at a point on the prolongation of the magnetic axis of P is inclined at 30° with this axis. Compare the magnetic moments of the two magnets.

Posted by Aryan Verma 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Two short magnets A&B of magnetic moment 32Am² & 27Am² are placed on a table. Find the magnitude & direction of magnetic field produced by these magnets at point situated at equitorial lines of both the magnets at distance of 40cm & 30cm respectively from the centres of the two magnets.

Posted by Aryan Verma 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Find electric field at a point r from centre of rod of lengthe 2a consider it along x axis

Posted by Anshu Deo 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Lekha Raj 7 years, 4 months ago

It has already given ncert.........

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Lohith Margzzz 7 years, 4 months ago

It will be in electrical field

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4 equal magnitude of point charge are placed at the cirnwr of square that's 40 cm of each sides two chargesare digonally opposite and other two are negative. find the force either on negative

Posted by Rajat Chauhan 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Can you tell me that in which we get more shock from a. wire in home electricity wire which Carry. nearly 1A or 2A current but a phone battery of 3000 mA carry a a 1 A or 2A current but has a bolt of 4.3 or 4.4 why these happens give with reason and with prove

Posted by Surende X 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why di electric constant decreases with increse in temprature

Posted by Mohit Raj Meena 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Nirai Azhagan 7 years, 4 months ago

Electric current is inversly propostional to temperature

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ANSWER

Explain superposition principle in easy words

Posted by Shikhar Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Rishabh Sahu 7 years, 4 months ago

Superposition principle has 2 important points the second one is usually not focused on despite being important. 1 The net effect (eg net coulomb force on a charge ) is the sum ( vector sum in this case ) of individual effects . 2 The individual effects ( force due to one charge ) is unaffected by the presence or absence of other ( charges in this case ) . The superposition principle is not applicable to normal reaction force as it changes magnitude on the basis of other forces applied hence despite obeying the laws of vector addition normal reaction force disobey the superposition principle.

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Aditya Singhal 7 years, 4 months ago

In easy words , superposition principle is just other name of vector addition ..

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Explanation of examples of chapter 1

Posted by Minma Limboo 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

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Which of the following fundamental forces is the strongest force? A)gravitational force B)electromagnetic force C)strong nuclear force D)weak nuclear force

Posted by Badal Kumar 7 years, 4 months ago

CBSE > Class 12 > Physics

3 answers

Lekha Raj 7 years, 4 months ago

Strong nuclear force.............It has already given in physics ncert book in chapter nuclei .

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Shivam Srivastava 7 years, 4 months ago

Electromagnetic force

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Tushar Yadav 7 years, 4 months ago

Gravitational force is strongest force

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Why the direction of dipole moment is opposite to the electric field?

Posted by Neha Arya 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Shreya Verma 7 years, 4 months ago

It is explained under the topic ' electric field at a point on the equatorial line ' . You should check it in NCERT

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Tushar Yadav 7 years, 4 months ago

dipole moment vector is directed from the negative charge to the positive charge because the position vector of a point is directed outward from the origin to that point.

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If an object moves with uniform velocity 5 M per second along x-axis 10 second its acceleration is

Posted by Shubham Soni 7 years, 4 months ago

CBSE > Class 12 > Physics