When no input is connected to a cathode-ray oscilloscope (CRO), a straight horizontal line is displayed along the central axis of the screen (representing zero volts).
Three different circuits are connected in turn to the CRO input:
Describe the key features of the trace that would be observed on the CRO screen for each of these three circuits. In your description, specify the shape of the trace and its position relative to the central zero-voltage axis.
136 exam-style questions on CIE IGCSE Physics 4.3 Electric circuits, covering 4.3.1a Circuit diagrams and circuit components, 4.3.2a Series circuits, 4.3.2b Parallel circuits, 4.3.2c Current and potential difference in circuits, 4.3.2d Combined resistance of resistors in parallel, and 4.3.3 Action and use of circuit components. Each one has a worked solution and a mark scheme showing where the marks go.