Question

Explain uses of second plate in a parallel plate capacitor

Answer 1

Given (28)3 + (−15)3 + (−13)3 Recall that whenever (a+ b + c) = 0, a3 + b3 + c3 = 3abc Here a = 28, b = −15 and c = −13Hence (28)3 + (−15)3 + (−13)3 = 3 × 28 × (−15) × (−13)                                             = 16380