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6 marksEnergy

CSEC Physics · May/June 2014 · Paper 2 · Question 5(a)

Climate change is a major global issue. Individuals can help by conserving energy.

Describe THREE ways in which this can be done. State clearly what form of energy is conserved in EACH case.

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Other parts of this question

  1. 5(b)(i)Calculate the total energy in kW h that the bulb will consume during the two-week period.[4 marks]
  2. 5(b)(ii)Given that Rasheed's electricity rate is $0.26 per kWh, calculate his electricity charges for the bulb for the two weeks.[1 mark]
  3. 5(b)(iii)During the two-week period, 15.5 kWh of energy was lost as heat from the bulb. Determine the efficiency of the bulb.[4 marks]

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