JAMB Physics 2017 Objective — Question 19
Question 19 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2017 Objective paper, with the correct answer and a full explanation.
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From the diagram, calculate the energy stored in the capacitor (8μF capacitor, 10V supply).
- A. A. 4.0x10⁻²J
- B. B. 4.0x10⁻⁴JCorrect
- C. C. 8.0x10⁻⁴J
- D. D. 8.0x10⁻²J
Explanation
Energy = ½CV² = ½x8x10⁻⁶x10² = 4.0x10⁻⁴J.
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