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

If the electrostatic field lines are not perpendicular to the surface, there will be a component of the electric field which is tangential to the surface of the conductor. If that is the case, it would create a potential difference and would accelerate the free electrons resulting in current. The only way a conductor can stay at a constant potential throughout or be an equipotential surface, is if the electric field lines are perpendicular to all elemental surfaces of the conductor.

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Drishtee Gupta 8 years, 1 month ago

Is que ne mujhe bhi confuse kiya . is liye mene yha pucha .. Ye que arihant ki book me h

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Jass Mangla 8 years, 1 month ago

Ur question shld add normal to surface to complete questions n ans is if it wld not b normal then there wld b zero component which means charge experience some force due to which it leaves the surface

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Ishu Chouhan 8 years, 1 month ago

Surface of a charge what???

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Drishtee Gupta 8 years, 1 month ago

Pls koi de do ans

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ANSWER

How will you revise before physics exam

Posted by Kajal Bhardwaj 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Jass Mangla 8 years, 1 month ago

Sabse pehle Sabhi derivation ache se revise the NCERT questions

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Ishu Chouhan 8 years, 1 month ago

Revise karne ka Sabse acha tarika ki questions solve karna chahiye ncert + board questions.

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ANSWER

Nature of path of free electron in a conductor in the presence of electric field

Posted by Deepanshu Chaudhary 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Radhika Tyagi 8 years, 1 month ago

Parabolic

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ANSWER

Explain why the reactance offered by an inductor increases with increasing frequency of an alternate voltage.

Posted by Pragya Singh 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Abc Arora 8 years, 1 month ago

Xl = 2 pie v (inductive reactance directly proportional to frequency) Whereas Xc = 1/2pie v (capacitive reactance is inversely proportional to frequency)

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Kajal Bhardwaj 8 years, 1 month ago

Xc=2 pie v directly proportional to frequency

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ANSWER

Which derivations are imp.for 12 boards 2018 (chapter-wise)??

Posted by Srishti Jha 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ishu Chouhan 8 years, 1 month ago

Sab pado buddy?

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ANSWER

How does maximum K. E of electron emitted vary with work function of metal??

Posted by Priya Prakash S 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Lekha Raj 8 years, 1 month ago

Inversely

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Priya Prakash S 8 years, 1 month ago

Yes

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Tanisha Dey 8 years, 1 month ago

Real name hai apka

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ANSWER

Two point charge

Posted by Barkha Barkha 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Radhika Tyagi 8 years, 1 month ago

?? ?

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ANSWER

With the help of a labeled diagram ,explain the principle construction and working of an ac generator derive the expression for the induced emf and current

Posted by Harbati Yadev 8 years, 1 month ago

CBSE > Class 12 > Physics

9 answers

Ishu Chouhan 8 years, 1 month ago

Diagram aur expression k liye ncert prefer kar lena

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Ishu Chouhan 8 years, 1 month ago

Working when a plane of coil is parallel to mag field torque acts on it and coil rotates clockwise , flux changes and emf induced and induced current flow

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Ishu Chouhan 8 years, 1 month ago

3.Carbon brush are fixed but R1 <R2 . 4. The external load resistance Rl is connected to carbon brushes

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Ishu Chouhan 8 years, 1 month ago

3. B1 and B2 are fixed, butR1 <R2 rotate along a coil. 4. The external load resistance Rl is connected to B1 and B2

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Ishu Chouhan 8 years, 1 month ago

Construction 1. It consists of armature coil or rectangular coil with no. Of turns of conducting wires kept between strong N-S magnet which produce mag field.2.one end of coil is connected to carbon brush B1 trough Slip ringsR1 and other end is connected to carbon brush B2 through slip ring R2

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Ishu Chouhan 8 years, 1 month ago

Principle It is based on principle of EMI.

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Ishu Chouhan 8 years, 1 month ago

Principle It is based on principle of EMI. Construction: 1. It consists of armature coil or rectangular coil with no. Of turns of conducting wire, kept between strong N-S magnet which produce mag. Field. 2. One end of coil is connected to carbon brushB1 through slip rings R1 and other end is connected to carbon brush B2 through slip ringR2. 3. B1 and B2 are fixed ,but R1<R2 rotate along a coil.4.t he external load resistance Rl is connected to B1 and B2.

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Ok Ok 8 years, 1 month ago

There is a well labelled diagram

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Radhika Tyagi 8 years, 1 month ago

Yha diagram ni bnte

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ANSWER

What is difference between self inductance and self induction?

Posted by Shankarlal Tolani 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Ishu Chouhan 8 years, 1 month ago

Self induction:- it is a property of a coil by virtue of which it delay in growth or decay of current due to change in magnetic flux linked with coil. Self inductance:- it is equal to change in flux linked with the coil ,when 1 amphere current flows through it.

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Sanat Zehra 8 years, 1 month ago

The property of self induction is called self inductance

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ANSWER

What is electrostatic induction

Posted by Vineet Pabbi 8 years, 1 month ago

CBSE > Class 12 > Physics