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Work done in moving charge q = q*potential difference between the two points...... Since surface is equipotential this means potential difference between any two points all over surface is zero... Therefore no work will be done

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Relation between electric field and potential difference

Posted by Shaktiraj Singh Chandrawat 7 years, 1 month ago

CBSE > Class 12 > Physics

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Vishal Sharma 7 years, 1 month ago

E=-dv/dr

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Calculate the point on line joining the two charges +8c and -4c where the net potential becomes zero

Posted by Vikash Kumar 7 years, 1 month ago

CBSE > Class 12 > Physics

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Diagram of astronomiacal telescope?

Posted by Anik Bhandari 7 years, 1 month ago

CBSE > Class 12 > Physics

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Function of electric and magnetic field in cyclotron

Posted by Lipika Yadav 7 years, 1 month ago

CBSE > Class 12 > Physics

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Varnika Bhatt 7 years, 1 month ago

Electric field is used to accelerate the particle upto the region of magnetic field and magnetic field is responsible for the circular motion of the particle so as to return back to electric field gain more kinetic energy and further more accelerated.

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Define mobility of a charge carrier. What is the relation with relaxation time.

Posted by Avi Dhama 7 years, 1 month ago

CBSE > Class 12 > Physics

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Mansi Sharma 7 years, 1 month ago

Mobility of a charge carrier is the Drift velocity acquired by it in a unit electric field it is given by Vd/E

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How will you determine the direction of electric field at apoint

Posted by Ankit Yadav 7 years, 1 month ago

CBSE > Class 12 > Physics

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Four point charges each having charge q are placed on the four corners of regular Pentagon ABCDE. The distance of each corner from centre is a. Find the electric field at the centre of pentagon.

Posted by Sachin Kumar 7 years, 1 month ago

CBSE > Class 12 > Physics

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Why galvanometer always connected with parallel

Posted by Sneha Sinha 7 years, 1 month ago

CBSE > Class 12 > Physics

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derivation of electric potential due to a point charge

Posted by Shivanshu Kulshrestha 7 years, 1 month ago

CBSE > Class 12 > Physics

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Manan Bedi 7 years, 1 month ago

You can find derivation in book

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What is principle of superposition

Posted by Rahul Bahajit 7 years, 1 month ago

CBSE > Class 12 > Physics

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Saravanakumar Poornimadevi 7 years, 1 month ago

It states that for all linear system the net respnse caused by two or more stimuli is the sum of the responses that would have been caused by each stimuli individually

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Draw the labelled diagram for the formation of image by an astronomical telescope ? Derive the expression for its magnification power in normal adjustment . Write two basic features which can distinguish between a telescope ana a compound microscope.

Posted by Shubham Mangla 7 years, 1 month ago

CBSE > Class 12 > Physics

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Which material is used in making the core of a moving coil galvanometer

Posted by Dev Chahar 7 years, 1 month ago

CBSE > Class 12 > Physics

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Will compartment exam ask tough question

Posted by Navya Saxena 7 years, 1 month ago

CBSE > Class 12 > Physics

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What is the meaning of Newton third law motion

Posted by Subham Chakraborty 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Varnika Bhatt 7 years, 1 month ago

Every action has equal and opposite reaction acting simultaneously on two different objects... Thats why equal and opposite force pairs doesnt cancel out each other as action and reaction pairs doesn't act on same object but two different ones

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Tarun Deshwal 7 years, 1 month ago

According to Newton's 3rd law Every action has equal and opposite reaction. ex- see-saw

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What is classical electromagnetic theory?

Posted by Deepak Yadav 7 years, 1 month ago

CBSE > Class 12 > Physics

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Expression for magnetic field on axial line of magnetic dipole

Posted by Shimanshu Kumar 7 years, 1 month ago

CBSE > Class 12 > Physics

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Application of biot savart law

Posted by Anmol Pandhu 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Tarun Deshwal 7 years, 1 month ago

There are three application of biot savart's law 1-Magnetic field at the center of circular current carrying coil. 2-Magnetic field on the axis of circular current carrying coil. 3-Magnetic field due to straight current carrying wire.

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Kamakshi Dixit 7 years, 1 month ago

Used in speedometer Train' s wheel Therepy

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A galvanometer can be converted into a voltmeter to measure upto (i) v volt by conecting a resistence R1 in series (ii) v/2 volt by conecting a resistence R2 in series .find the resistence in terms of R1& R2 to convert into a voltmeter to read upto 2v volt

Posted by Vinit Yadav 7 years, 1 month ago

CBSE > Class 12 > Physics