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Derive an expression for potential due to a point charge

Posted by Shayam Jain 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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What is figure of merit?

Posted by Akash Bhangi 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Deepak Jindal 7 years, 3 months ago

K is figure of merit

1Thank You

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Interference due to thin films in syllabus or not?

Posted by Ash Ash 5 years, 8 months ago

CBSE > Class 12 > Physics

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What is effect of current measuring range of galvanometer when it is shunted?

Posted by Rashika Pareek 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Saran S 7 years, 3 months ago

When the glvnmtr is shunted, the effective resistance becomes too small In the parallel circuit,hence converting it into an ammeter.due to a small effective resistance, the current entering the coil is large...... Range of ammeter increases.

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We know area is a scalar quantity but surface area is a vector quantity. why so ?

Posted by Preeti Kumari 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Saran S 7 years, 3 months ago

Area Vector is a vector normal to the given area. Hence it has a direction(perpendicular).so it is a vector.

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Ash Ash 7 years, 3 months ago

Bcoz area matters for flux

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Full derivation of work done in rotating a dipole

Posted by Shiva Tiwari 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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Amaya mathur, Ajay sharma mera close friend Nahi hai aur B.C to sirf tere pass hai please muze de do

Posted by H. S 5 years, 8 months ago

CBSE > Class 12 > Physics

1 answers

Kiara Khurrana 7 years, 3 months ago

ji nahi mere pass sirf bf hai bc aur mc toh tere pass hai kutte

1Thank You

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Which book is best for chapterwise previous years board papers with solutions

Posted by Harry Krishna 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Princesses Kaur 7 years, 3 months ago

10 year

2Thank You

Anurag Kumar 7 years, 3 months ago

Arihant ....

1Thank You

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Why does electric field inside the conductor is zero

Posted by Anitya Tyagi 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Anjana Sherawat 7 years, 3 months ago

Because charge is present on the surface not inside

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Kiara Khurrana 7 years, 3 months ago

becoz of electrostatic shielding

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Write four characteristics of magnetic field lines

Posted by Yuvraj Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Anurag Kumar 7 years, 3 months ago

1. Magnetic field lines form close loop . 2. Magnetic field lines are parallel to each other . 3. Magnetic field lines do not intersect each other 4. Magnetic field lines is from north to south but on axis of magnet its direction is from south to north

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Derivation of work done in rotating a dipole.

Posted by Shiva Tiwari 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Anjana Sherawat 7 years, 3 months ago

-PE costheta

1Thank You

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Vector form of kirchoffs law

Posted by Nitish Chauhan 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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What is electrolysis

Posted by Aditi Raj 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Agrit Garg 7 years, 3 months ago

Dissociate into ion cation and anion

1Thank You

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Amaya mathur AC, DC to pata hai BC kiya hota hai

Posted by H. S 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Kiara Khurrana 7 years, 3 months ago

bhai aab toh pakka hai ki tu akash bhangi ka pakka waLa dost hai

0Thank You

Kiara Khurrana 7 years, 3 months ago

are u close friend of ajay sharma, well yes l agree with u frm which school u r donkey

1Thank You

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Prove that why faraday law bigger unit of coppicter

Posted by Gulab Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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in the bohr model of hydrogen atom electron moves around the nucleus in a circular orbit radius 5 *10power-5 m with time period 1.5*10-16sec then current is

Posted by Sonu Bansal 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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A 20g bullet moving at 300 m/s stop after panicreeting 3 cm of bone . Calculate the average force exerted by the bullet.

Posted by Haritik Sharma 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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Konsa sample paper humare liye best hqi boards ke liye

Posted by Virendra Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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A boy is 1.8m tall and can see his image in a plane mirror fixed on a wall. His eye are 1.6m from the floor level.what is the minm length of the mirror to see his image??

Posted by Supriya Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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Physics syllabus 2018-19

Posted by Mahak Gupta 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Kiara Khurrana 7 years, 3 months ago

puri book aa rahi hai kamine

4Thank You

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The value of gravtional force(g) The force of a body is 50N.calculate the mass in gram.

Posted by Golu Swami 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Bhavani D S Bhavani D S 7 years, 3 months ago

F=mg

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Devashish Agrawal 7 years, 3 months ago

F=mg

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Difference between mutual inductance & emf

Posted by Satyendra Thakur 5 years, 8 months ago

CBSE > Class 12 > Physics

3 answers

Kiara Khurrana 7 years, 3 months ago

oye golu swami apna elaj karva varna mar jayega

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Golu Swami 7 years, 3 months ago

According to faraday second law

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Satyendra Thakur 7 years, 3 months ago

Phi-s =MIP A/C to 2nd law of Faraday E =-d(phi-s) /dt =-Md(IP)/dt M=-E /d(IP)/dt M=modulus E

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Electric field in linear charge density

Posted by Zeba Ansari 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Bhavani D S Bhavani D S 7 years, 3 months ago

Change up on length

1Thank You

Priyanka Malik 7 years, 3 months ago

Lambda=q/l (charge upon length)

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Why the test series are not available dor free??

Posted by Sweta Kumari 7 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

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What is a transient current?

Posted by Aisa Singh 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Yogita Ingle 7 years, 3 months ago

An electric current which vary for a small finite time, while growing from zero to maximum or decaying from maximum to zero, is called a transient current.
Growth of current in an inductor at any instant of time t is given by
I = I₀(1 – e ^{-Rt / L})
where, I₀ = maximum current, L = self inductance of the inductor and R = resistance of the circuit.
Here R / L = τ, is called time constant of a L – R circuit.

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What do you mean by reference point

Posted by Himanshu Duklan 7 years, 3 months ago

CBSE > Class 12 > Physics