Tuesday 27 September 2016

Gr 11 September Physical Science Control Test: Comments

Reminder: For more information, read the comments at the bottom as well. If they do not open automatically on your device, click on "... comments" to open them.

Q1.5
Answer is B

Q2.1
A third mark is needed. Add it to the first sentence: "The magnitude ... (Q2)."

Q2.3
Mark the question out of two marks as a unit. Total of question two is then nine and total of paper is then 100.

Q3.2
Award the first mark for the correct shape (meaning field lines spread radially around charge with field lines touching the charge).
Second mark for symmetry (meaning eight equally distributed field lines).
Third mark (as indicated in memo) on direction.

Q3.3
Think of mark allocation as follows:
First mark on the idea that the net field is equal to zero.
Second mark for the formula of electric field (one form or another).
Third mark: We cannot award another mark for the zero. Move this mark to the denominator of the first calculation, i.e. (0,2 - x)square.

Q5.3
Units in answers should be watt.

Q7.1
Here is a correct alternative with mark allocation:




4 comments:

  1. vraag 2.1 op die memo tel net twee punte. Hoe merk ons dit?

    ReplyDelete
    Replies
    1. Dankie vir die vraag. Het hierbo geantwoord namens eksaminator en moderator.

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  2. Vr.aag 3.1. Definisie van elektriese veld is die ruimte om 'n gelaaide voorwerp waarin ander voorwerpe 'n krag sal ondervind.
    daar word nie gevra die elektriese veldsterkte nie

    ReplyDelete
    Replies
    1. Die eerste deel van jou sin verwys na die beskrywing van 'n elektriese veld. Die definisie van elektriese veld (die woord veldsterkte of -intensiteit hoef nie gebruik te word nie) moet in terme van die "formule" gestel; krag per eenheids(positiewe)lading.

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