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

Max b/w them magnitude =A+B
Min magnitude b|w them =A-B
10+6=16 and 10-6=4
It will lie between 4 and 16 it can neither be less that 4 nor be more than 16..

2Thank You

ANSWER

A long straight cable contains 7 strands of wire each carrying a current of 5 A . The magnetic induction at a distance of 2 cm from the axis of the cable is

Posted by Y S 3 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Anjan Karthi 3 years, 3 months ago

That is a proportionality constant (called permeability of free space) . Only if we have that in the equation can we equate both LHS and RHS.

0Thank You

Y S 3 years, 3 months ago

Why we take Up/4π

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Y S 3 years, 3 months ago

Thank you Aditya Bro

0Thank You

Anjan Karthi 3 years, 3 months ago

B = (μ°/4π) In / r^2 = 10^-7 × 7 × 5 / (0.02) ^2 = 35 × 10^-5 = 3.5 × 10^-4 T //

1Thank You

Aseem Mahajan 3 years, 4 months ago

3.5 × 10^-4 T

1Thank You

ANSWER

Find the voltage across each resister

Posted by Y S 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Y S 3 years, 4 months ago

It is question of Kirchhoff law and (nly available in photo N I can't send it's figure

1Thank You

Account Deleted 3 years, 4 months ago

Your question is incomplete...

1Thank You

ANSWER

What is Polar and nonpolar electric dielectric medium ? Derive an expression for work done to rotate electric dipole in uniform electric field from angle theta 1 and angle theta 2 electric dipole

Posted by Shivani Shukla 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 3 years, 3 months ago

W = -pE (cos θ1- cos θ2)

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ANSWER

Two charges 5 micro coulomb and (-5) micro coulomb are placed at a distance 10 cm.How muvh work done is required to constitute the system ?

Posted by Shivani Shukla 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 3 years, 3 months ago

W = k Q q / r = 9 × 10^9 × 25 / 0.1 = 225 × 10^10 J //

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ANSWER

(i) Why do magnetic lines of force form continuous closed loops? (ii) Why are the field lines repelled (expelled) when a diamagnetic material is placed in an external uniform magnetic field?Read more on Sarthaks.com - https://www.sarthaks.com/57808/explain-the-following-i-why-do-magnetic-lines-of-force-form-continuous-closed-loops

Posted by Konica Sukhwani 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Anjan Karthi 3 years, 3 months ago

(i) Closed curves formed by magnetic lines of force in magnetism indicates that monopoles can never exist ie, if there is a North Pole, there should be a corresponding South Pole.

0Thank You

Y S 3 years, 4 months ago

Both are repellent because of same magnetic poled

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ANSWER

The area of circular wing 1 cm^2 carrying a current of 10A is passing through it, if the magnetic field intensities 0.1T is applied perpendicular to plane of ring.

Posted by Priyanshu Yadav 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Anjan Karthi 3 years, 3 months ago

Torque τ = mB sin 90° = IAB × 1 = 10A × 10^-4 m^2 × 0.1 T = 10^-4 Nm. // Potential energy U = - mB cos 90° = 0//

0Thank You

Aseem Mahajan 3 years, 4 months ago

Incomplete question

1Thank You

ANSWER

happy independence day
🇮🇳

Posted by Aseem Mahajan 3 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Shani Yadav 3 years, 4 months ago

Same to you

1Thank You

Y S 3 years, 4 months ago

Same to u everyone

1Thank You

Saurav Kumar 3 years, 4 months ago

Same to you

1Thank You

Account Deleted 3 years, 4 months ago

Happy independence day 🇮🇳

2Thank You

ANSWER

Using an expression for drift velocity, show that the mobility of free electron is directly proportional to its relaxation time.

Posted by Daj Kshiar 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Anjan Karthi 3 years, 3 months ago

Vd = -eE/m × τ

0Thank You

Shabadjot Kaur Shabad 3 years, 4 months ago

Drift velocity is defined as average velocity by which free electrons can move

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ANSWER

A conductor of length l and radius r is connected across a battery.how will the drift velocity of electrons and resistance (R) of conductor be affected when I)L is halved ii) r is doubled iii) v is halved

Posted by Shanmukhi Velamuri 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Anjan Karthi 3 years, 3 months ago

(i) When L is halved, Vd is doubled (Vd = eVτ/mL) and R is also halved (R = ρL/A). (ii) When r is doubled, Vd remains the same and R is decreased 4 times. (iii) When V is halved, Vd is also halved and R is the same.

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ANSWER

Told you so, its ruined by people. Ever had experience with vedas ? If not, than try. Indians had done more work than current western `science` has accomplished. Our religion was based on humanity too.

Posted by Aseem Mahajan 3 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Aseem Mahajan 3 years, 4 months ago

Told you so didn't get through even one yet.
No isssues about that, that's just one thing. There are hundreds of others which are studied now by "science" but are already explored in our culture. Now you know why I say our culture was the best. Others' are just stories.

1Thank You

Account Deleted 3 years, 4 months ago

Which Veda you have read or learned ?

1Thank You

Account Deleted 3 years, 4 months ago

I had heard about it but I don't have any idea about it before today ..when you said I asked to my grandmother about it and also searched on internet and I got to know that it represents seven colours rainbow, light travels in single line and 7 components of yoga ..And thanks:-) to you for telling me about it .. Today I learnt something very intresting ....

1Thank You

Aseem Mahajan 3 years, 4 months ago

I have not read any religious book yet. But I have more plans regarding that. And to prove how Hinduism is not just belief, I can give one example and one is enough. Ever heard that "suryadev" travels in 7 "raths" ? Ask from your parents about it. And some "modern" and brainless people will say its mythology, fiction etc etc. But neither of them cannot understand that this relates to seven colours of sunlight (VIBGYOR). Some foolish people also call it "accident" but I don't care. I know our religion is not like theirs.

1Thank You

Account Deleted 3 years, 4 months ago

No I haven't gone through Vedas(but I will try ) or any other religions books except Geeta and I think it was the best book that have ever learned .....have read Geeta ?

1Thank You

ANSWER

An electron and a proton are kept in same electric field will they experience same electric field and have same acceleration

Posted by Himanshi Sharma 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Deepak Saini 3 years, 3 months ago

Same electric field but not same force.. e have more force

1Thank You

ANSWER

What is electrostatic?give Example?

Posted by Arshpreet Kaur 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Y S 3 years, 4 months ago

Charges at rest position

2Thank You

Shabadjot Kaur Shabad 3 years, 4 months ago

State of rest

1Thank You

ANSWER

The transistor and "communication systems" is deleted in ncert. So why the heck they are included in cuet syllabus????

Posted by Aseem Mahajan 3 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Account Deleted 3 years, 4 months ago

MY exam which was supposed to held tomorrow also got postponed..I think NTA will keep on conducting exams for the whole year and we will get the results next year ..

1Thank You

Aseem Mahajan 3 years, 4 months ago

Its not an experiment. Its a way of making money. CBT earns a lot of profit than omr. But those fools do not realize their failure of exam conduct has costed more than a offline examination. Spam on twitter #CUETofflinetest maybe they hear. Ask your friends or who ever you know for it.

1Thank You

Account Deleted 3 years, 4 months ago

I also think offline would have been a better option .Recently all exams that were conducted was offline and there was no problem .So what was the point of conducting cuet online . I think NTA is doing all of their experiments on us ...

1Thank You

Aseem Mahajan 3 years, 4 months ago

Not lack of planning, its a new child and doesn't know how to take online exam and still forcing us for online exam. I would opt for offline exam even now if possible. Talking of syllabus, its a stupid and absurd syllabus.

0Thank You

Account Deleted 3 years, 4 months ago

Because of lack of planning nta is doing such kind of silly mistakes ....I don't why NTA is conducting this exam when not fully prepared for this ...

1Thank You

ANSWER

Explain any plausible way of time travel

Posted by Aseem Mahajan 3 years, 4 months ago

CBSE > Class 12 > Physics

5 answers

Aseem Mahajan 3 years, 4 months ago

Not really. If aliens are there, they are confined to their planets like us. Not like the stupid senseless imagination of western people

1Thank You

Account Deleted 3 years, 4 months ago

Do you believe in parallel life or parallel universe ?

0Thank You

Aseem Mahajan 3 years, 4 months ago

Yes same. Time travelling maybor may not be possible we cannot answer it now.

1Thank You

Account Deleted 3 years, 4 months ago

Brainly buddy and amiable buddy is same ?

0Thank You

Account Deleted 3 years, 4 months ago

Time travelling is not possible so there is no way for TT ...

0Thank You

ANSWER

Are alloy good conductor of electricity

Posted by Harshit Singhal 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Anjan Karthi 3 years, 3 months ago

Alloys have higher resistivity and lower conductivity than it's constituent metals.

0Thank You

Y S 3 years, 4 months ago

Yes alloys are good conductor of electricity but they have capacity to conduct than metals

0Thank You

ANSWER

Why material bodies acquire charge

Posted by Ravi Ranjan Yadav 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Harshit Singhal 3 years, 4 months ago

It depends on methods of developing the charge 1.due to transfer of electrons in rubbing method 2.by induction method

0Thank You

Anurag Sahu 3 years, 4 months ago

Apply ampere circuital law to find the magnetic field both inside and outside of toroidal solenoid

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ANSWER

A.P ..?

Posted by Account Deleted 3 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Account Deleted 3 years, 4 months ago

I remember I had seen this name before ..

2Thank You

Aseem Mahajan 3 years, 4 months ago

Its brainly buddy

2Thank You

Account Deleted 3 years, 4 months ago

Thanks .

0Thank You

Sunny Rathee 3 years, 4 months ago

a, a+d, a+2d, .... Where a and d are real number D is common difference between two quantities

2Thank You

ANSWER

State and explain kinchoffs second law of electricity

Posted by Kosmita Phukan 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Sunny Rathee 3 years, 4 months ago

Statement : In a loop the net Potential is 0

2Thank You

ANSWER

Ab intio method to derive concave lens maker formula

Posted by Kishor Jhorar 3 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Formulas of all lesson

Posted by Simmu Sharif 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Y S 3 years, 4 months ago

Which subject of which class

0Thank You

ANSWER

What is the vector law of coulomb law....??and prove...

Posted by Himanshu Singh 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Sunny Rathee 3 years, 4 months ago

F = Kq1q2/r square K = 1/4π€0 = 9 *10 to the power of 9

0Thank You

Rudra Hikaka 3 years, 4 months ago

The force between two charges is directly proportional to the product of magnitude of that two charges

2Thank You

ANSWER

Peak value of irms

Posted by Rohit Kumar 3 years ago

CBSE > Class 12 > Physics

1 answers

Preeti Dabral 3 years ago

Irms=T =2 I0 where I0 is the peak current and T is the time period.

0Thank You

ANSWER

Columbs

Posted by Sachin Srivastav 3 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Y S 3 years, 4 months ago

Unit of charge

0Thank You

Rudra Hikaka 3 years, 4 months ago

F=Kq/r

0Thank You

Divya. Kumari 3 years, 4 months ago

F=ka/r

3Thank You

Abhishek Kumar 3 years, 4 months ago

F = kq/r

3Thank You

ANSWER

Who were make physics and why

Posted by Chandrashekhar Paraste 3 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Abhishek Kumar 3 years, 4 months ago

Netaon To give a different world of science

0Thank You

ANSWER

Calculate the electric field intensity due to an electric dipole of length 10cm consisting of 2 charge of 2 microcoulomb at a distance of 50cm from each charge.

Posted by Kalpesh Banjara 3 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Hariom Upadhyay 3 years, 4 months ago

Kq/r^3 (3cos2theta-1)

0Thank You

Prabhakar Jha 3 years, 4 months ago

Product of charge

1Thank You

ANSWER

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