Posts

Showing posts from December, 2019

Important questions

» A positive charge of 16μC when flows from point A to B on its own, work done by the field on charge is 16×10−3J. What is the potential of A if potential of B is 1100 volt? Ans . Using I = q/t                  {q = n e} I = n e / t I = 1  A ,      t = 1  s,    e= 1.6×10  −19   C No. of electron = I t / e                                   = 1×1 / 1.6 × 10^ -19                             = 6.25 × 10¹² electron » A piece of resistance wire has resistance of 16Ω. It is melted and reformed into a wire such that, its diameter is doubled. New resistance of the wire will be Ans : R = length × area of cross section   Resistance is inversely proportional to area or d^2/4 .  So, if diameter doubles the resistance will become 1/4 of initial ...

Popular posts from this blog

Carbohydrates || Lipids|| Proteins || Vitamins & Minerals || Fats and Oils

Himanshu chaudhary

2.0 gram of a metal burst in oxygen give 3.2 gram of its oxide. 1.42 gram of the same metal heat in steam give 2.27 gram of its oxide which toys shown by this data?

Vistas Chapter-2 The Tiger King || Revision Notes Class 12 Board Exams

Data Mining || Supervised vs. Unsupervised Techniques || Dimensionality Reduction || Partitioning Methods