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समान्तर क्रम में विभवांतर समान क्यों होता है ?

1. Write four facts of Panama Canal.

Revision में ज्यादा Time लग रहा है ?? Short Notes चाहिए ??

The relaxation time tau is nearly independent of applied electric field E whereas it changes significantly with temperature T . First fact is (in part) responsible for Ohm's law whereas the second fact leads to variation of p with temperature. Elaborate why?

Graphite is a much better conductor of heat and electricity than diamond. This is due to the fact that each carbon atom in graphite:( ग्रेफ़ाइट ऊष्मा ओर धारा का चालक होता है , क्यों ?)

Prakash bought an electric bulb which is rated as 70 W . He knows the fact that a 70 W bulb consumes 70 joules of electrical energy per second . The energy consumed by it per second is "______" ergs.