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.

0Thank You

ANSWER

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 5 years, 7 months ago

CBSE > Class 12 > Physics

7 answers

Nikita Beniwal 5 years, 7 months ago

It already come in 2018

1Thank You

Shruti Jha 5 years, 7 months ago

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

1Thank You

Muskaan Vig 5 years, 7 months ago

Welcome shruti?all the best..

1Thank You

Shruti Jha 5 years, 7 months ago

Wokays! Thanks Sufiyan, Khushi and Muskaan?.

0Thank You

Sufiyan Ali 5 years, 7 months ago

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

1Thank You

Khushi Singh 5 years, 7 months ago

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

1Thank You

Muskaan Vig 5 years, 7 months ago

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

1Thank You

ANSWER

Forces between multiple charges in electric charge and field

Posted by Abdul Rahim 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Killer Xmarty 5 years, 7 months ago

0Thank You

Shruti Jha 5 years, 7 months ago

Apply principle of superpostion!

0Thank You

Sufiyan Ali 5 years, 7 months 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

0Thank You

ANSWER

CBSE 12 Physics 2008

Posted by Athena Phibs 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 5 years, 7 months ago

???

0Thank You

ANSWER

Logic gates explanation

Posted by Vijaylaxmi Chaurasia 5 years, 7 months ago

CBSE > Class 12 > Physics

2 answers

Sufiyan Ali 5 years, 7 months ago

This part is removed this year

0Thank You

Âññü Šîñg*H??? 5 years, 7 months ago

y topic syllbs s remove ho gya h

0Thank You

ANSWER

Important numerical of magnetism

Posted by Siya Kri 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 5 years, 7 months ago

Refer NCERT examples snd pervious year!

0Thank You

ANSWER

What are velocity filter

Posted by Rahul Yadav 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Tamanna Sharma 5 years, 7 months 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 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

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

Posted by Shruti Jha 5 years, 7 months ago

CBSE > Class 12 > Physics

22 answers

Killer Xmarty 5 years, 7 months ago

Apna bhii do sat jaye

0Thank You

Killer Xmarty 5 years, 7 months ago

Hoga

0Thank You

Shruti Jha 5 years, 7 months ago

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

0Thank You

Killer Xmarty 5 years, 7 months ago

???

0Thank You

Shruti Jha 5 years, 7 months ago

???

0Thank You

Rameez Khan 5 years, 7 months ago

Kya sweetheart

0Thank You

Shruti Jha 5 years, 7 months ago

Hii

0Thank You

Rameez Khan 5 years, 7 months ago

0Thank You

Rameez Khan 5 years, 7 months ago

Hoo j

0Thank You

Shruti Jha 5 years, 7 months ago

Hello there!

0Thank You

Rameez Khan 5 years, 7 months ago

Hii jn

0Thank You

Shruti Jha 5 years, 7 months ago

Wokays, Arzoo! All the very best.

0Thank You

Killer Xmarty 5 years, 7 months ago

24 feb

1Thank You

Shruti Jha 5 years, 7 months ago

Okay, Annu!

0Thank You

Âññü Šîñg*H??? 5 years, 7 months ago

mine from 24 feb?

0Thank You

Tapan Pandey?? 5 years, 7 months ago

Mine from 27 feb

1Thank You

Meghna Sharma 5 years, 7 months ago

Am from Haryana

1Thank You

Shruti Jha 5 years, 7 months ago

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

0Thank You

Meghna Sharma 5 years, 7 months ago

Thanking u too ayaan

0Thank You

Meghna Sharma 5 years, 7 months ago

Thanks shruti

1Thank You

Shruti Jha 5 years, 7 months ago

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

1Thank You

Meghna Sharma 5 years, 7 months 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 5 years, 7 months ago

CBSE > Class 12 > Physics

6 answers

Tapan Pandey?? 5 years, 7 months ago

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

0Thank You

Meghna Sharma 5 years, 7 months ago

Physics exam is on 2 march

1Thank You

Shruti Jha 5 years, 7 months ago

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

1Thank You

Riya Rana 5 years, 7 months ago

Yess true ayaan... ??

0Thank You

Riya Rana 5 years, 7 months 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 5 years, 7 months 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 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Palak Batra 5 years, 7 months ago

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

0Thank You

Riya Rana 5 years, 7 months ago

Previous years are important as well..

1Thank You

Shruti Jha 5 years, 7 months 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!

0Thank You

ANSWER

(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 5 years, 7 months ago

CBSE > Class 12 > Physics

4 answers

Tamanna Sharma 5 years, 7 months 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 5 years, 7 months ago

Expression for the torque will be M×B vector.

2Thank You

Mahi D 5 years, 7 months ago

Pls answer the second part.

0Thank You

Mahi D 5 years, 7 months 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.

0Thank You

ANSWER

Electrostaics

Posted by Arjun Kumar 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Apoorva Rao 5 years, 7 months ago

It is the study of electric charges at rest

0Thank You

Nancy Verma 5 years, 7 months ago

Sorry os nhi is hai

0Thank You

Nancy Verma 5 years, 7 months ago

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

0Thank You

ANSWER

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

Posted by Nancy Verma 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 5 years, 7 months ago

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

3Thank You

ANSWER

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 5 years, 7 months ago

CBSE > Class 12 > Physics

6 answers

Nancy Kansal 5 years, 7 months ago

Thanks to all of u?

0Thank You

Palak Batra 5 years, 7 months ago

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

1Thank You

Tamanna Sharma 5 years, 7 months ago

2Thank You

Amit Kushwaha 5 years, 7 months ago

by mistkly some question came

1Thank You

Amit Kushwaha 5 years, 7 months ago

1Thank You

Ankit Singh 5 years, 7 months ago

1Thank You

ANSWER

Tell me topics of 8th unit

Posted by Preet Dhillon 5 years, 7 months 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 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Palak Batra 5 years, 7 months ago

100 days

0Thank You

Neha Choudhary 5 years, 7 months 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 5 years, 7 months ago

100 days....

1Thank You

ANSWER

physics paper 2019

Posted by Golu Gagan 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

smit****@***** 5 years, 7 months ago

Download class 12 board paper from play store

2Thank You

ANSWER

Meaning of induction

Posted by Rishabh Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Calculate the charge carried by 12.5x10^8 electrons

Posted by Priyanshu Raj 5 years, 7 months ago

CBSE > Class 12 > Physics

2 answers

Nancy Verma 5 years, 7 months ago

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

0Thank You

Priyanshu Raj 5 years, 7 months ago

2x10^-10 C

0Thank You

ANSWER

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

Posted by Prikshit Kumar 5 years, 7 months ago

CBSE > Class 12 > Physics

4 answers

Nancy Verma 5 years, 7 months ago

Yes it is in syllabus

0Thank You

smit****@***** 5 years, 7 months ago

Yaa

1Thank You

Subhendu Mandal 5 years, 7 months ago

Yes

0Thank You

Tamanna Sharma 5 years, 7 months ago

Yes

1Thank You

ANSWER

What is Brewster formulas

Posted by Supriya Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

4 answers

Sejal Dhakad 5 years, 7 months ago

Brewster angle = u=tan(i)

0Thank You

Amit Kushwaha 5 years, 7 months ago

Tan p equal to n1 /n2

0Thank You

Subhendu Mandal 5 years, 7 months ago

tan(angle of polarisation)= refractive index

0Thank You

Yogita Ingle 5 years, 7 months 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.

0Thank You

ANSWER

Is amplifier is in the syllabus of +2

Posted by Nitish Kathuria 5 years, 7 months ago

CBSE > Class 12 > Physics