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

At constant temperature the electric current passes through a conducting wire is directly proportional to the electric potential applied across the end of the conductr

1Thank You

Septima Ravenclaw 7 years, 2 months ago

Potential difference is directly proportional to current while Physical conditions like pressure ,mechanical strain etc. remaining unchanged...

1Thank You

Deepak Bghl 7 years, 2 months ago

Ohms law states v is directly proportional to current only

0Thank You

Rishabh Sahu 7 years, 2 months ago

Current density J = σ E ( product of conductivity and electric field inside the conductor)

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Pooja Sharma 7 years, 2 months ago

V=IR

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ANSWER

Equation for vandegraph generator

Posted by Philip Immanuel 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Riya Chaurasiya 7 years, 2 months ago

Not in syllabus

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ANSWER

What is the torque in magnetic field

Posted by Abhijeet Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Manas Goyal 7 years, 2 months ago

It is theta

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Manas Goyal 7 years, 2 months ago

It's not qita

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Saloni S 5 years, 5 months ago

torque =MB sin(qita)

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What is faraday's law?

Posted by Anshit Saxena 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What are the Sign conventions for kirchhoffs voltage rule

Posted by Septima Ravenclaw 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Amal Raj 7 years, 2 months ago

1)when a resistance is traversed in the direction of current I IR is +ve 2)when a cell is traversed from -ve to +ve terminal the EMF is +ve

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Can you suggest an arrangement of three point charges separate by some finite distance that has zero electric potential energy

Posted by Frankly Chauhan 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Pooja Sharma 7 years, 2 months ago

At the centre of dipole and also at the equitorial site of dipole

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Electrochemical cell

Posted by Shubham Tambi 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

solved question paper of 2016 class 12

Posted by Jasmeet Kaur 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

10 numercial of resistance and combintion

Posted by Ritik Chaudhary 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Difference between the permanent and electro m

Posted by Sa Gangaraju Satyavarapu 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 3 months ago

Electromagnet	Permanent Magnet
The magnetic properties are displayed when current is passed through it	Magnetic properties exist when the material is magnetized
The strength is adjusted depending upon the amount of flow of current	The strength depends upon the nature of the material used in its creation
Removal of magnetic properties is temporary	Once magnetic properties is lost, it becomes useless
It requires a continuous supply of electricity to maintain its magnetic field.	It doesn’t require a continuous supply of electricity to maintain its magnetic field
It is usually made of soft materials	It is usually made of hard materials
The poles of this kind of magnet can be altered with the flow of current	The poles of this kind of magnet cannot be changed.

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Name the forces b/w two charges.

Posted by Lipika Yadav 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Aryan Hari 7 years, 2 months ago

Force of attraction between two charges if they are unlike charges and force of repulsion between two charges if they are like charges.

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Prince Rana 7 years, 2 months ago

Coulumbic force

2Thank You

Rachit Sinha 7 years, 2 months ago

electrostatic force.Force between rest charges

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ANSWER

Why do like charges rapel each other

Posted by Abhinav Deshwar 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Sa Gangaraju Satyavarapu 7 years, 2 months ago

Because the poles of the two like magnets cannot attract

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ANSWER

Why we don't clap in water?

Posted by Srishti Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Amarjeet Singh 7 years, 2 months ago

Sound travel in medium but in water sound travel slowly that is not audible

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Whaetstone bridge

Posted by Baljit Singh 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Parminder Kaur Mavi 7 years, 2 months ago

Statement:- If four resistances P,Q,R&S are connected to form a bridge then if switch S1 is closed first and S2 later on then galvanometer shows no deflection if P/Q is equal to R/S

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Rishabh Sahu 7 years, 2 months ago

Wheatstone bridge.

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What type of field is produced by a moving charge and why?

Posted by Isha Taneja 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Priyanka Rani 7 years, 2 months ago

Magnetic field and electric field both

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H!Mαη$Hμ Ұαδαυ ✔️ 7 years, 2 months ago

Because it behaves like a wire

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Riya Chaurasiya 7 years, 2 months ago

Magnetic field

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Why nucleus and electrons atttach with each other if we look according to the coloumb law

Posted by Shivam Pandit 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Resistor reduse the current then why currenot is same in series circuit

Posted by Satyam Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Rishabh Sahu 7 years, 2 months ago

Current is net effect of movement of free electrons throughout the conductor described by amount of charge crossing through a cross section of conductor per unit tim. It's not described as the movement of charge throughout the conductor from one point to another point . So current cannot decrease in this way. The amount of charge crossing a cross section per unit time is unaffected.

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ANSWER

Demison formula

Posted by Sahil Malani 7 years, 2 months ago

CBSE > Class 12 > Physics