Question Detail

PHY 102 Test Compilation PHY 102 6 Objective Question

Question

Parallel plate air capacitor: plates 0.2 m (area?), spacing 1 cm, 50V. Charge? (area unclear, likely 0.2 m²? But 0.2 m square = 0.04 m²)
Options
A 2.85 nC
B 9.15 nC
C 8.85 nC
Correct Answer
D 2.05 nC
Correct Answer

Option C is the correct answer.

Detailed Explanation

Assuming area=0.2 m²? Then C=ε₀A/d=8.85e-12×0.2/0.01=1.77e-10 F, Q=CV=8.85e-9 C=8.85 nC. Option C.

Hint

C=ε₀A/d, Q=CV.

Question Info