MCQ
The constant k in Coulomb's law depends upon:
- ANature of medium
- BSystem of units
- CIntensity of charge
- DBoth (a) and (b)
Explanation:
The value of $\text{K}=\frac{1}{4\pi\in_0}=8.854\times10^{-12}\text{C}^2\text{N}^{-1}\text{m}^{-2}$
Where ε0 is permittivity of free space.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$=\text{R}$
$\le\text{R}$
$>\text{R}$
$\ge\text{R}$
Two circuits have coefficient of mutual induction of 0.09 henry. Average e.m.f. induced in the secondary by a change of current from 0 to 20 ampere in 0.006 second in the primary will be
|
(a) 120 V |
(b) 80 V |
(c) 200 V |
(d) 300 V |