| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.HL.TZ2.7 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 7 | Adapted from | N/A |
Question
Two charged parallel metal plates, X and Y, are separated by a distance of 2.0 m. X is at a potential of -150 V and Y is at a potential of +150 V.
Point P is midway between X and Y. Which of the following gives the electric field strength at point P?
A. 150 Vm–1 to the right
B. 150 Vm–1 to the left
C. 300 Vm–1 to the right
D. 300 Vm–1 to the left
Markscheme
B
Examiners report
Many candidates chose D, despite the use of Vm-1 as the units of electric field strength.
Syllabus sections
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