PhysicsElectrostaticsJAMB
Find the electric field strength 0.2 m from a point charge of 4 × 10⁻⁹ C. [k = 9 × 10⁹ N m²/C²]
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Answer: B. 900 N/C
E = kq/r² = 36/0.04 = 900 N/C.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.