Question

Board & Competitive Exams (Level-)
Electric Charges and Fold
ofiel
20. The electric held due to a point charge at a distance 6 m from it is 630 NC. The magnitude of the charge
(1) 2.52
(2) 124 C
(3) 4.96
(4) 0.62 uc​

Answer 1

Explanation:

Here E = 630 N/C , r = 6m , To find : Q

We know that

E = k Q / r^2 where k = coulomb's Constant = 9 x 10 ^9

=> Q = E r^2 / k

=> Q = 630 x 6 × 6 / 9 x 10 ^9

= 70 x 36 / 10 ^9 ( On dividing 630 by 9 )

= 2520 x 10 ^ -9 ( here 1 / 10 ^9 = 10 ^ -9 )

= 2.52 x 10 ^3 x 10 ^ -9 ( here 420 = 4.2 x 10 ^2)

= 2.52 x 10 ^ 3 + ( -9)

= 2.52 x 10 ^ 6 C

= 2.52 uC

$<b><marquee>$Mark me as brainliest please

Answer 2

Answer:

${\huge{\red{\underline{\bold{Answer!}}}}}$

Your answer is

a)2.52uc

Thanks❤️