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CELL EMF:
The size of a cell has no bearing on the emf that it will produce, the generated emf being determined solely by the materials used in its construction. Another point to note is that the potential difference, or voltage measured across the terminals of a cell, is not the same as the emf generated by the cell. The terminal voltage of a cell depends on the:
Superconductivity The phenomena from which, at sufficiently low temperatures, a conductor can conduct charge along with zero resistance. The current theory for describing supe
What do you understand by reverberation time an auditorium What do you mean by sound absorber. Give two examples for good absorbers.
Angle of Deviation: When a ray of light passes by a prism, It changes it's path inside the prism and forms an angle with the emergent ray. This angle is called as the angle of
Explain the term 'dielectric constant' of a medium in terms of capacitance of a capacitor. Draw a graph showing variation of resistivity of carbon with temperature
numerical example
A Newton is equal to which of the following? a) kilogram-meter per second b) meter per second squared c) Kilogram-meter per second squared d) Kilogram per
Q. Explain why does heated air expand? Answer:- Temperature is habitually defined as the average thermal energy of the substance at hand. Therefore the hotter a substance
Ergosphere The region about a rotating black hole, among the event horizon & the static limit, where rotational energy can be extracted through black hole.
Q. Describe the isotopes? Answer:- An atom of an element that has a diverse number of neutrons in its nucleus to other atoms of the element.
A board that is 1.5 m long is supported in two places. If the force exerted by the first support is 25 N and the forced exerted by the second is 62 N. what is the mass of t
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