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

Capacitor is an arrangement of two conductor having equal and opposite charges seperated by an insulating medium. Also in addition it is used to store electri charge and electric energy and to make LC oscillator! I hope it make sense to you.

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Ek gal dasso cells in series and parallel ke derivations puch sakte hain kya? Like it's been never asked in previous year so....?

Posted by Shruti Jha 6 years, 1 month ago

CBSE > Class 12 > Physics

7 answers

Nikita Beniwal 6 years, 1 month ago

It already come in 2018

1Thank You

Shruti Jha 6 years, 1 month ago

Thank you, Muskaan! All the very best to you too?

1Thank You

Muskaan Vig 6 years, 1 month ago

Welcome shruti?all the best..

1Thank You

Shruti Jha 6 years, 1 month ago

Wokays! Thanks Sufiyan, Khushi and Muskaan?.

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Sufiyan Ali 6 years, 1 month ago

Cells in parallel may be is year rakha ho skta h... So dont skip derivation

1Thank You

Khushi Singh 6 years, 1 month ago

Yup may be.... There is no pattern of the questions asked in cbse board papers so...

1Thank You

Muskaan Vig 6 years, 1 month ago

No ,they are only for our knowledge ....

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Forces between multiple charges in electric charge and field

Posted by Abdul Rahim 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Killer Xmarty 6 years, 1 month ago

0Thank You

Shruti Jha 6 years, 1 month ago

Apply principle of superpostion!

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Sufiyan Ali 6 years, 1 month ago

force on any charge due to a number of other charges is the vector sum of all the forces on that charge due to other charges are taken at a time The individual forces remain unaffected due to other charges presence This method is called the principle of superposition

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CBSE 12 Physics 2008

Posted by Athena Phibs 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 6 years, 1 month ago

???

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ANSWER

Logic gates explanation

Posted by Vijaylaxmi Chaurasia 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Sufiyan Ali 6 years, 1 month ago

This part is removed this year

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Âññü Šîñg*H??? 6 years, 1 month ago

y topic syllbs s remove ho gya h

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Important numerical of magnetism

Posted by Siya Kri 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 6 years, 1 month ago

Refer NCERT examples snd pervious year!

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ANSWER

What are velocity filter

Posted by Rahul Yadav 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Tamanna Sharma 6 years, 1 month ago

Arrangement of electric and magnetic field perpendicular to each other so that we can select the velocity of incoming charge particle according to our need.

1Thank You

ANSWER

Along the electric field only magnitude of potential or potential itself decreases?

Posted by Mitali Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Hello peers! Is there anyone whose boards are from 24th of feb?

Posted by Shruti Jha 6 years, 1 month ago

CBSE > Class 12 > Physics

22 answers

Killer Xmarty 6 years, 1 month ago

Apna bhii do sat jaye

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Killer Xmarty 6 years, 1 month ago

Hoga

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Shruti Jha 6 years, 1 month ago

Rameez i can't do all this. Mujhse nahi hota. So please!

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Killer Xmarty 6 years, 1 month ago

???

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Shruti Jha 6 years, 1 month ago

???

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Rameez Khan 6 years, 1 month ago

Kya sweetheart

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Shruti Jha 6 years, 1 month ago

Hii

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Rameez Khan 6 years, 1 month ago

0Thank You

Rameez Khan 6 years, 1 month ago

Hoo j

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Shruti Jha 6 years, 1 month ago

Hello there!

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Rameez Khan 6 years, 1 month ago

Hii jn

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Shruti Jha 6 years, 1 month ago

Wokays, Arzoo! All the very best.

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Killer Xmarty 6 years, 1 month ago

24 feb

1Thank You

Shruti Jha 6 years, 1 month ago

Okay, Annu!

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Âññü Šîñg*H??? 6 years, 1 month ago

mine from 24 feb?

0Thank You

Tapan Pandey?? 6 years, 1 month ago

Mine from 27 feb

1Thank You

Meghna Sharma 6 years, 1 month ago

Am from Haryana

1Thank You

Shruti Jha 6 years, 1 month ago

That's why! I am from Gujarat. Thank you and All the very best to you too. Hope you guy's make it.

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Meghna Sharma 6 years, 1 month ago

Thanking u too ayaan

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Meghna Sharma 6 years, 1 month ago

Thanks shruti

1Thank You

Shruti Jha 6 years, 1 month ago

Oh! Okay okay. All the Best,Meghna!?

1Thank You

Meghna Sharma 6 years, 1 month ago

No mine starts from 20 feb

1Thank You

ANSWER

I don't know anything about physics How can I cover up this subject to compete in boards exam 2020

Posted by Saurav Kumar 6 years, 1 month ago

CBSE > Class 12 > Physics

6 answers

Tapan Pandey?? 6 years, 1 month ago

Oye.... Firstly complete your 2nd part. Then magneto and after that electrostatic

0Thank You

Meghna Sharma 6 years, 1 month ago

Physics exam is on 2 march

1Thank You

Shruti Jha 6 years, 1 month ago

No my board exams are starting from 24th feb onwards!

1Thank You

Riya Rana 6 years, 1 month ago

Yess true ayaan... ??

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Riya Rana 6 years, 1 month ago

Secondly there aint any time left so that you can cover the ENTIRE syllabus at this peak time.... So try to cover maximum number of important topics plus previous yrs but tbh you wouldnt be able to score high bcoz there are like only 10 days left in starting of board exams (not demotivating) but you should have realised it earlier anyways cover as much as you can... Good luck doing that ...!!

1Thank You

Riya Rana 6 years, 1 month ago

First of all... Good morning... :-/

1Thank You

ANSWER

i have only 6 days to learn physics and i've not learnt anything. should i solve last 10year que pprs or go through chapters

Posted by Sachi Pandey 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Palak Batra 6 years, 1 month ago

yes thus can help u very much...and imp derivations and numericals type can also be able to understand..

0Thank You

Riya Rana 6 years, 1 month ago

Previous years are important as well..

1Thank You

Shruti Jha 6 years, 1 month ago

No! Firstly go for laws and derivations so that you can have some idea on how to deal with questions. Than you can do previous year solved paper. All the Best!

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(a) (i) A circular loop of area vector A, carrying a current I is placed in a uniform magnetic field vector B. Write the expression for the torque vector τ acting on it in a vector form.

Posted by Mahi D 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Tamanna Sharma 6 years, 1 month ago

When the field and circular loop plane are perpendicular to each other, at this time area vector and field parallel to each other and hence ( cos 0) max value for flux ,here

2Thank You

Shruti Jha 6 years, 1 month ago

Expression for the torque will be M×B vector.

2Thank You

Mahi D 6 years, 1 month ago

Pls answer the second part.

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Mahi D 6 years, 1 month ago

(ii) If the loop is free to turn, what would be its orientation of stable equilibrium? Show that in this orientation, the flux of net field (external field + the field produced by the loop) is maximum.

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ANSWER

Electrostaics

Posted by Arjun Kumar 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Apoorva Rao 6 years, 1 month ago

It is the study of electric charges at rest

0Thank You

Nancy Verma 6 years, 1 month ago

Sorry os nhi is hai

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Nancy Verma 6 years, 1 month ago

Electrostatic os a branched of physics that study electric charge at rest

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ANSWER

Semiconductor ke 14.8 14.9 ka ans bta do bhai lo NCERT ka

Posted by Nancy Verma 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 6 years, 1 month ago

50 Hz for half wave and 100 Hz for full wave.

3Thank You

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Transistors are not in syllabus but still even in latest sample papers of CBSE there are questions related to it. So should prepare that topic or not?

Posted by Nancy Kansal 6 years, 1 month ago

CBSE > Class 12 > Physics

6 answers

Nancy Kansal 6 years, 1 month ago

Thanks to all of u?

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Palak Batra 6 years, 1 month ago

not at all ..no need to do transistor..

1Thank You

Tamanna Sharma 6 years, 1 month ago

2Thank You

Amit Kushwaha 6 years, 1 month ago

by mistkly some question came

1Thank You

Amit Kushwaha 6 years, 1 month ago

1Thank You

Ankit Singh 6 years, 1 month ago

1Thank You

ANSWER

Tell me topics of 8th unit

Posted by Preet Dhillon 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

The half Life period of a radioactive element is 25 days. what is the time taken for 15/16th of its original mass to disintegrate?

Posted by Subham Sapkota 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Palak Batra 6 years, 1 month ago

100 days

0Thank You

Neha Choudhary 6 years, 1 month ago

T half =25 days N/No=1-15/16=1/16 =1/2^4 =1/2^4=1/2^t/25 T=100

1Thank You

Muskaan Vig 6 years, 1 month ago

100 days....

1Thank You

ANSWER

physics paper 2019

Posted by Golu Gagan 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

smit****@***** 6 years, 1 month ago

Download class 12 board paper from play store

2Thank You

ANSWER

Meaning of induction

Posted by Rishabh Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Calculate the charge carried by 12.5x10^8 electrons

Posted by Priyanshu Raj 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Nancy Verma 6 years, 1 month ago

Use the formula q =ne where e =1.6×10^-19

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Priyanshu Raj 6 years, 1 month ago

2x10^-10 C

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ANSWER

Is moving coil galvanometer is there in syllabus of class 12 session 2020 ?

Posted by Prikshit Kumar 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Nancy Verma 6 years, 1 month ago

Yes it is in syllabus

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smit****@***** 6 years, 1 month ago

Yaa

1Thank You

Subhendu Mandal 6 years, 1 month ago

Yes

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Tamanna Sharma 6 years, 1 month ago

Yes

1Thank You

ANSWER

What is Brewster formulas

Posted by Supriya Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Sejal Dhakad 6 years, 1 month ago

Brewster angle = u=tan(i)

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Amit Kushwaha 6 years, 1 month ago

Tan p equal to n1 /n2

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Subhendu Mandal 6 years, 1 month ago

tan(angle of polarisation)= refractive index

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Yogita Ingle 6 years, 1 month ago

Brewster’s law:- Brewster’s law states that at any particular angle of incidence, reflected ray is completely polarized; and the angle between reflected and refracted ray is 90⁰.

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Is amplifier is in the syllabus of +2

Posted by Nitish Kathuria 6 years, 1 month ago

CBSE > Class 12 > Physics