O-LevelPhysicsElectricity5054/21 · May/June 2016 · Q94 Marks
EITHER Fig. 9.1 shows a cathode-ray oscilloscope (c.r.o.). An alternating voltage supply is applied to the input and the trace produced is shown. [Figure 9.1]
- (a)Use Fig. 9.1 to determine the maximum voltage of the supply.[2]
- (b)Describe how the trace on the screen and the controls on the c.r.o. are used to measure the time between any two points on the trace.[2]
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Mark scheme
Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.
- [C1] 2 squares
- [A1] 10V
- [C1] measure/find horizontal distance/number of divisions (between points)
- [A1] distance × no (m)s/division
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