a
(a) \(Q \,= CV\, = C\, (Bvl)\, = 10\, × 10\,-6\, × 4\, × 2\, ×1\, = 80\) \(\mu\,C\) According to Fleming's right hand rule induced current flows from \(Q\) to \(P\). Hence \(P\) is at higher potential and \(Q\) is at lower potential. Therefore \(A\) is positively charged and \(B\) is negatively charged.
