WAEC Physics 2016 Objective — Question 38
Question 38 of 50 from the West African Examinations Council (WAEC) Physics 2016 Objective paper, with the correct answer and a full explanation.
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38. The p.d. across a parallel-plate capacitor is 10³V. If the distance between the two plates is 10 cm, calculate the magnitude of the electric field strength between the plates. A. 1.0×10⁴Vm⁻¹ B. 1.0×10⁵Vm⁻¹ C. 1.5×10⁵Vm⁻¹ D. 2.0×10⁵Vm⁻¹
- A. 1.0×10⁴Vm⁻¹Correct
- B. 1.0×10⁵Vm⁻¹
- C. 1.5×10⁵Vm⁻¹
- D. 2.0×10⁵Vm⁻¹
Explanation
E=V/d = 10³/0.1 = 1.0×10⁴ Vm⁻¹.
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