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Plus Two Physics

Electric Current and flow of electrons

I have read that the FLOW OF ELECTRONS is called electricity. I wanna know that what is meant by flow of electrons? Pleaz answer me…. (Asked Kiruthika) Answer: Electric current is the flow of charges. (Measured as the rate of flow of charges). In conductors electric current is caused by the flow of free electrons. When a potential difference is […]

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The mechanism of operation in a capacitor

The DC doesnt flow through capacitor. I thought it was because the electrons jus get saturated on one side and are lost on other side, such that it can’t take or give up anymore or plausibly due to voltage developed across it whereas in AC as directions keep changing, saturation doesnt occur. But it if […]

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Is potential difference is directly proptional to resistance?

Is potential difference is directly proptional to resistance? (atanu asks) Answer: For a constant current, the potential difference is directly proportional to the resistance included in the circuit. For a given conductor at constant temperature, resistance is a constant and the potential difference across it is directly proportional to the current passed through it.  

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+2 Physics Answers ANSWERS TO QUESTIONS FROM VISITORS

Dimensions of angle, specific heat, heat, latent heat, frequency, charge, potential difference, resistance.

What are the dimensions of angle,specific heat,heat,latent heat,frequency,charge,potential difference,resistance? Angle does not have any dimension as it is a pure ratio Dimensions of Specific heat  = [M0L2T-2K-1] Heat has the same dimensional formula as that of energy [ML2T-2] Latent heat is the heat energy required to convert unit mass of a substance from one state […]

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Animated Physics General Physics

Cyclotron Animation

A cyclotron is device by which positively charged particle can be accelerated and the desired nuclear reaction can be brought about. Principle A positively charged particle can be accelerated to high energy with the help of an oscillating electric field, by making it cross the same electric field time and again with the use of […]

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Potential Difference

Pawan Asked “What is meant by potential difference?” Answer: “Potential Difference between two points is the difference in Potential between the two points and is equal to the work done per unit charge ion carrying a positive test charge from one point to another against the electric field and without any acceleration”