Question

14.7
An electric field is given by E = -2x® kN/C. The potential of the point (1, -2), if potential of the point (2,
4) is taken as zaro, is
(A) - 7.5 x 103 V (B) 7.5 x 103 V
(C) - 15 x 109 V
(D) 15 x 10' V
14.8
Two concentric uniformly charged spheres of radius 10 cm & 20 cm are arranged as
/
100​

Answer 1

Answer:

We will end by concluding that our terms are best understood ex negativo. In order to understand what scientists or philosophers of past and present ages mean when they attribute something to chance, coincidence, randomness or luck, it is indispensable to understand what it is that they wish to exclude. Is it necessity, fate, determinism, causal knowledge, regularity, high probability, or something else? Given the obvious vagueness and contradictoriness of the connotations of our original set of words, it will come as no surprise to see that their contraries are just as ill-defined. Still, there is a strong heuristic advantage to this exercise. Being aware of what it is that we wish to exclude, we, the readers of this essay, will at least have some greater clarity of what it is that we implicitly wish to affirm with our underdetermined words