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

No... Bcoz resistance depends on length and are of cross section so here neither length is changed nor area of cross section... So resistance will b unchanged

2Thank You

ANSWER

Plz tell viva question of physics urgent

Posted by Anita Yadav 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Prashant Tripathi 7 years, 10 months ago

Don't take ut so seriously they give good marks

0Thank You

Rajat Raguvanshi 7 years, 10 months ago

On your project and practical experiment mostly questions are asked from this but it depends on examiner mood

2Thank You

ANSWER

In purification of water which constituent radiation of e.m. waves is used?

Posted by Nikhil Jain 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Arti Kumari 7 years, 10 months ago

Uv rays

1Thank You

ANSWER

Give an example of a material each for which have temperature cofficient of resistivity is 1,positive and 2,Negative

Posted by Garima Singh 7 years, 10 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Name a material which is suitable for permanent magnet

Posted by Nikhil Jain 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Priya Gupta 7 years, 10 months ago

material which has high coercivity &retentivity

2Thank You

ANSWER

What is standard resistance ? Plzz..... jaldi batao na kal mera practical hai ???

Posted by Pankaj Sihag 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Danish Khan 7 years, 10 months ago

Standard resistance is the normal resistance bro which is inverse of conductance

2Thank You

ANSWER

Determine the value of de-brogile wavelengtha ssociated with the electron orbiting in the ground state of hydrogen atom(En-_13.6/ )ev and bohr radius ro-0.53.how will be de brogile wavelength changes when it is in first excited state?

Posted by Garima Singh 7 years, 10 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

12th board exam me optical instruments ka definition and construction puchte hai kya?

Posted by Trishala Vijaywargiya 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Deeksha Bhagwat 7 years, 10 months ago

1Thank You

Jin Kazama 7 years, 10 months ago

may be yes

1Thank You

ANSWER

StateGeneralised amphere circuital law

Posted by Ishu Chouhan 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 7 years, 10 months ago

B.Dl=MU I + MU Id

2Thank You

ANSWER

Why are microwaves used in rador ?

Posted by Ishu Chouhan 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Naman Patidar 7 years, 10 months ago

They have larger wavelength and have high pe etrating power so they can penetrate clouds.

1Thank You

Aisha Grewal 7 years, 10 months ago

Longer wavelength and low frequency

2Thank You

ANSWER

Is van dee graff generator is in our course

Posted by Anita Yadav 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 7 years, 10 months ago

bilcul bhi nahi hai

0Thank You

Aisha Grewal 7 years, 10 months ago

Nai h

0Thank You

ANSWER

Easy way to understand krichoff's law

Posted by Richa Bharti 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Anita Yadav 7 years, 10 months ago

There is a video on this app fir kirchoff law

0Thank You

Jin Kazama 7 years, 10 months ago

sum of incoming current = sum of outgoing current

2Thank You

ANSWER

Why high resistivity wires are needed in circuit

Posted by Prerna Jha 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Amarvir Amarvir 7 years, 10 months ago

to prevent the damage of electric devices by high voltage

1Thank You

ANSWER

What is eddy current ?

Posted by Rishav Yadav 7 years, 10 months ago

CBSE > Class 12 > Physics

3 answers

Radhika Tyagi 7 years, 10 months ago

* when magnetic field linked with it changes

1Thank You

Radhika Tyagi 7 years, 10 months ago

A swirling current that is developed in the bulk of a conductor

1Thank You

Prerna Jha 7 years, 10 months ago

The current linked with bulk piece of conductor when magnetic field linked with conductor changes is known as eddy currents

1Thank You

ANSWER

Please explain what is a wavefront?

Posted by Anam Noor 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Hina Siddiqui 7 years, 10 months ago

Locus of all those particles which r vibrating in the same phase at any instant

0Thank You

ANSWER

Dimensionsn of electrical resistance is

Posted by Riya Kujur 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Radhika Tyagi 7 years, 10 months ago

[ML^2T^-3A^-2]

0Thank You

ANSWER

Calculate the charge carried by 12.5*10^18 electron

Posted by Aryan Pratap Singh 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Aisha Grewal 7 years, 10 months ago

Q=ne

0Thank You

ANSWER

What is the weightage of numericals in physics class 12th CBSE?

Posted by Nikhil Gupta 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Saurav Sharma 7 years, 10 months ago

14 marks

2Thank You

ANSWER

differentiate between strong and weak ferromagnetic substance

Posted by Vishal Gupta 7 years, 10 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is displaced in displacement current

Posted by Noor Gill 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Ishu Chouhan 7 years, 10 months ago

It arises due to charge in electric field between the plates of capacitor,hence electric flux linked with it changes and current induced called displacement current

0Thank You

ANSWER

Why are short wave used in long distance transmission?

Posted by Pratiksha Singh 7 years, 10 months ago

CBSE > Class 12 > Physics

11 answers

Aisha Grewal 7 years, 10 months ago

Finally everything is right....... Kyu bhai

1Thank You

Vineet Kumar Gupta 7 years, 10 months ago

vineet kumar gupta

1Thank You

Aisha Grewal 7 years, 10 months ago

My rh gyi

1Thank You

Unique Person Arupitw 7 years, 10 months ago

By which name

0Thank You

Vineet Kumar Gupta 7 years, 10 months ago

mei bhi aagay goodwall pei

1Thank You

Unique Person Arupitw 7 years, 10 months ago

Tum good wall or aao nakli asli sab pta chal jayrga

1Thank You

Vineet Kumar Gupta 7 years, 10 months ago

take your time aur jab mood sahi hu jaye toh aajana wapas . mei hamesha tere saath hu

0Thank You

Vineet Kumar Gupta 7 years, 10 months ago

thik hai viswas hai appei ☺

0Thank You

Siddharth Afria 7 years, 10 months ago

niche ka kuch mene nahi likha ...

0Thank You

Vineet Kumar Gupta 7 years, 10 months ago

name change kar lo na ek aur baar . pata chal jayega

0Thank You

Siddharth Afria 7 years, 10 months ago

Vineet neeche waala eek bhi chat mene nahi likha sab us nakli ne likha hai ..pata nahi kya chahta hai ye..

0Thank You

ANSWER

How does a transistor works as a switch

Posted by Sathya Subbarayan 7 years, 10 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A radioactive isotope has ahalf life of T years. How long will it take the activity to reduce to 1. 3.125 per cent 2. 1 per cent of its original value

Posted by Kartik Saxena 7 years, 10 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

When an electric dipole is held at an angle in a uniform electric field the net force f and torque on the dipole are

Posted by Sparsh Anand 7 years, 10 months ago

CBSE > Class 12 > Physics

7 answers

Sparsh Anand 7 years, 10 months ago

Thank you all

0Thank You

Hitesh Kumar 7 years, 10 months ago

Maine bhi toh waha kaha

1Thank You

Samriddhi Seth 7 years, 10 months ago

Coz at one point force is acting in one direction and at other point of dipole it acting in opposite direction .. so both the forces cancel each other as they are equal and opposite

0Thank You

Hitesh Kumar 7 years, 10 months ago

Force on +q charge is same with force on -q.but their direction is opposite so they will cancel each other .and that's how we get net force 0

0Thank You

Sparsh Anand 7 years, 10 months ago

How force is 0

0Thank You

Samriddhi Seth 7 years, 10 months ago

Net force is zero and torque is PESinO(theta)

0Thank You

Hitesh Kumar 7 years, 10 months ago

Force maybe 0.but torque may or may not be equal to 0

0Thank You

ANSWER

Biot savrat law

Posted by Sukhjit Sunny 7 years, 10 months ago

CBSE > Class 12 > Physics

3 answers

Adarsh Sharma 7 years, 10 months ago

0Thank You

Hitesh Kumar 7 years, 10 months ago

B = ∫ (μ0 / 4 π) I dl sin(θ)/r2

0Thank You

Hitesh Kumar 7 years, 10 months ago

The Biot-Savart Law relates the currents as sources of the magnetic fields. The magnetic field results from a current distribution that involves the vector product. Its units are given in Tesla (T)

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