2008 Semifinal Exam Part A 3 Part A Question Al Four square metal plates of area A are arranged at an even spacing d as shown in the diagram.(Assume that Ad2.) Plate I Plate 3 ate4 Plates 1 and 4 are first connected to a voltage source of magnitude Vo,with plate 1 positive;plates 2 and 3 are then connected together with a wire.The wire is subsequently removed.Finally,the voltage source attached between plates 1 and 4 is replaced with a wire.The steps are summarized in the diagrams below Step I Step 2 Step 3 Find the resulting potential difference AVi2 between plates 1 and 2;like wise find AV23 and AV34,defined similarly. Assume,in each case,that a positive potential difference means that the top plate is at a higher potential than the bottom plate. Copyright C2008 American Association of Physics Teachers2008 Semifinal Exam Part A 3 Part A Question A1 Four square metal plates of area A are arranged at an even spacing d as shown in the diagram. (Assume that A ≫ d 2 .) Plate 1 Plate 2 Plate 3 Plate 4 d d d Plates 1 and 4 are first connected to a voltage source of magnitude V0, with plate 1 positive; plates 2 and 3 are then connected together with a wire. The wire is subsequently removed. Finally, the voltage source attached between plates 1 and 4 is replaced with a wire. The steps are summarized in the diagrams below. Step 1 Step 2 Step 3 Find the resulting potential difference ∆V12 between plates 1 and 2; like wise find ∆V23 and ∆V34, defined similarly. Assume, in each case, that a positive potential difference means that the top plate is at a higher potential than the bottom plate. Copyright c 2008 American Association of Physics Teachers