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Sample exam questions - electric circuits - OCR 21st CenturySix-mark questions

Understanding how to approach exam questions helps boost exam performance. Questions will include multiple choice, descriptions and explanations, using mathematical skills and extended writing.

Part of Physics (Single Science)Electric circuits

Six-mark questions

Six-mark questions will only appear in the Depth paper. There will be two six-mark questions in the Depth paper.

Six-mark questions are extended free-response questions, requiring the longest answers. It is wise to plan your answer rather than rushing straight into it. Without a plan it is easy to stray away from the key point and lose marks, get steps in a process in the wrong order or forget key bits of information.

To gain six marks, you will need to:

  • use appropriate scientific words and terms
  • write your answer in full sentences, not bullet points
  • write clearly, linking ideas in a logical way
  • maintain a sustained line of reasoning, rather than a random list of statements and sentences
  • support explanations using scientific knowledge and understanding

Six-mark questions are marked using a levels-based mark scheme. An answer that is not clear and logically sequenced, and which does not give a coherent argument supported by evidence, will be limited to the lower levels. Similarly, if the question asks you to discuss both sides of an argument, or explain two observations, you will be limited to the lowest level if your answer only considers one of them (no matter how brilliantly written or comprehensively explained that one is!).

Writing six-mark answers with Dr Alex Lathbridge

How to write six-mark answers in your science GCSE exams.

Sample question 1 - Foundation

Question

Tim walks on a nylon carpet wearing shoes with rubber soles.

When he touches a metal rail, he feels an electric shock.

Tim worries about the risk from these electric shocks.

Explain these observations, and discuss what Tim will need to consider to decide the size of the risk. [6 marks]

OCR 21st Century Science, GCE Physics, Paper A182, May 2012.

Sample question 2 - Higher

Question

Diane investigates how the resistance of a wire changes with the length of wire.

She uses this circuit:

A circuit diagram with an ammeter and a constant voltage power supply.

Diane said "I expected resistance to be proportional to length of wire. My graph does not show this. I noticed the wire got hot when it was short."

Graph showing the resistance of wire against the length of wire, there are points plotted in the graph.

Discuss Diane's comments and explain the shape of her graph. [6 marks]

OCR 21st Century Science, GCE Physics, Paper A182, January 2013 - Higher.