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CLASS XII – PHYSICS Sample Paper II

CLASS XII – PHYSICS Sample Paper Time allowed : 3 hours Max. Marks : 70 General Instructions: All questions are compulsory There are 30 questions in total. Questions 1 to 8 carry one mark each, 9 to 18 carry two marks each, 19 to 27 carry 3 marks each and 28 to 30 carry 5 […]

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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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What is meant by charge on a capacitor?

Mohit asked this question: “What is meant by charge on a capacitor?” Answer: As we know, a simple capacitor (say a parallel plate capacitor) consists of two plates parallel to each other. When charged, charge on either plate of the capacitor is called charge on the capacitor. The following links will help you explore further […]

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Read more on Capacitors

Follow the link below to read on Various types of capacitor Factors Affecting Capacitance Capacitor Networks Charging and Discharging Capacitors Click Here to Visit the details

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CBSE Question Paper 2007

SET -1 In a series LCR circuit, the voltages across an inductor, a capacitor and a resisitor are 30 V, 30V and 60 V respectively. What is the phase difference between the applied voltage and the current in the circuit? Ultraviolet radiations of different frequencies f1 and f2 are incident on two photosensitive materials having […]

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IMPORTANT FIVE MARKS QUESTIONS FOR CLASS XII

Derive an expression for the Electric field at a point on the (i) axial line and (ii) equatorial line of an electric dipole Describe the principle construction and working of Van de Graff Generator. State Gauss’ theorem and apply it to find the electric field at a point due to A point charge A line […]