Question
Q1.(a) The graphs, A, B and C, show how the current through a component varies with the potential difference (p.d.) across the component. Draw a line to link each graph to the correct component. Draw only three lines. Component A resistor at constant temperature square A filament lamp (b) Each of the circuits, J, K and L, include two diodes. In which one e of the circuits, J, K or L would the filament lamp be on? __ (Total 3 marks) (2) (1)
Answer
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Jude
Master · Tutor for 5 years
Answer
(a) From the above steps, we can identify the suitable graph comparing a Resistor to the constant temperature component. Due to the lack of diagrams, the actual graph can't be confirmed. (For future reference, it would be the graph which goes straight passing through the origin.) (b) Looking at the circuits (assumed diagrams), the filament lamp is ON due to flowing of electric current towards it. For essentially those circuits in which diode arrangement allowed current flow to the filament lamp. Without actual diagrams, it is not possible to personally provide the particular name (J,K, or L).
Explanation
## Step 1: Investigate the graphs and its correlation The question illustrates that at constant temperature, for a resistor the graph between current and p.d. is expected to be a straight line passing through the origin. There's a direct proportionality between current and p.d due to the constant resistance (Ohm's Law). ### **
** From the information provided above, you can differentiate the graphs and link it to an ideal resistor.## Step 2: Look at the circuit diagrams to determine when the filament lamp is ONRemember that a Diode works like a one-way gate, letting the electrical current to flow in one direction only, from the anode to the cathode. A filament lamp will be on if the arrangement of diodes allows current to flow to it.