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4 marksElectric Charge, Q

CSEC Physics · 1998 · Paper 2 · Question 2(b)(v)

A negatively charged sphere A is connected by a copper wire to a positively charged sphere B, causing a current to flow.

Calculate how much charge is transferred through the wire if a current of 3 µA flows for 2 ms.

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Other parts of this question

  1. 2(a)(i)If the polythene rod is attracted, state TWO possible conclusions that might be drawn.[2 marks]
  2. 2(a)(ii)State the conclusion that could be drawn if the rods repelled each other.[1 mark]
  3. 2(b)(i)Mark on Figure 3 the direction of conventional current flow.[1 mark]
  4. 2(b)(ii)Identify what kind of charge actually moves in the wire.[1 mark]
  5. 2(b)(iii)State the direction in which the charges move (from which sphere to which sphere).[1 mark]
  6. 2(b)(iv)State the SI unit of electric charge and give its definition.[2 marks]
  7. 2(c)Calculate the charge stored in a 40 amp-hour battery using the SI unit for charge.[3 marks]

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