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7 marksElectric Charge, Q

CSEC Physics · May/June 2016 · Paper 2 · Question 5(b)(i)

The makers of a popular cellphone have upgraded its battery capacity from 4320 C to 9000 C. If the standard charger can deliver a current of 0.6A,

how much more time will it take to charge the new battery than the old battery?

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Other parts of this question

  1. 5(a)(i)How does the electric current in a metal differ from that in an electrolyte? Compare EACH with 'conventional current'.[4 marks]
  2. 5(a)(ii)State which of these two media (metal and electrolyte) has similar current flow to that in a semiconductor. Give a reason for your answer.[2 marks]
  3. 5(b)(ii)What must be the current rating on a new charger to accomplish this?[2 marks]

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