Question 30
Question 30 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
18. Electric fields
18.1. Electric fields and field lin...

understand that an electric field is an example of a field of force and define electric field as force per unit positive charge

18. Electric fields
18.5. Electric potential

recall and use the fact that the electric field at a point is equal to the negative of potential gradient at that point