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TrueHufflepuff TrueHufflepuff
  • 10-01-2017
  • Physics
Answered

Point R is 0.4 m from a 2C charge. Find the electric field at point R.

1.1x1011 N/C

3.4x1011 N/C

5.4x1011 N/C

2.7x1011 N/C

Verified Answer :

Anonymous Anonymous
  • 10-01-2017

We know, E = 1/4π∈ q/r²
Here, 1/4π∈ = 9 × 10⁹
q = 2 C
r = 0.4 

Substitute their values, 
E = 9 × 10⁹ 2/(0.4)²
E = 9 × 10⁹ 2/0.16
E = 9 × 10⁹ 12.5
E = 112.5 × 10⁹ N/C

So, Your Final Answer would be 1.125 × 10¹¹ N/C

Hope this helps!

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