This question is about electrical circuits - Edexcel - GCSE Physics Combined Science - Question 1 - 2022 - Paper 1
Question 1
This question is about electrical circuits.
a) Draw one straight line from each circuit symbol to its description. (3)
circuit symbol
description
battery
LED
swit... show full transcript
Worked Solution & Example Answer:This question is about electrical circuits - Edexcel - GCSE Physics Combined Science - Question 1 - 2022 - Paper 1
Step 1
Draw one straight line from each circuit symbol to its description.
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Answer
Battery: Connect the battery symbol to the description 'battery'.
LED: Connect the LED symbol to the description 'LED'.
Switch: Connect the switch symbol to the description 'switch'.
Resistor: Connect the resistor symbol to the description 'resistor'.
Step 2
The current in the lamp is a flow of
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Answer
B electrons — the current in an electrical circuit is due to the flow of electrons.
Step 3
Calculate the charge that flows through the lamp in a time of 300 s.
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Answer
To calculate the charge, use the formula:
extcharge=extcurrentimesexttime
Substituting in the values:
extcharge=0.21extAimes300exts=63extC
The charge that flows through the lamp is 63 coulombs.
