Question Detail

PHY 102 Test Compilation PHY 102 23 Objective Question

Question

The plates of a parallel plate capacitor are 8 cm by 8 cm, with 2 mm separation. Calculate the capacitance if glass of dielectric constant 5 fills the space.
Options
A 141.6 pF
Correct Answer
B 92.5 pF
C 9.85 pF
D 20.5 pF
Correct Answer

Option A is the correct answer.

Detailed Explanation

A = 0.08x0.08 = 6.4x10-3 m2, d = 0.002 m. C = K eps0 A/d = (5)(8.85x10-12)(6.4x10-3)/(0.002) = 141.6 pF.

Hint

A = 0.08x0.08 = 6.4x10-3 m2, d = 0.002 m.

Question Info