This question is about electrical circuits. (a) Draw one straight line from each circuit symbol to its description. circuit symbol description battery LED switch resistor (b) Figure 1 shows a lamp in a circuit. The lamp is switched on. Figure 1 (i) The current in the lamp is a flow of: A atoms B electrons C neutrons D protons (ii) The current in the lamp is 0.21 A. Calculate the charge that flows through the lamp in a time of 300 s. State the unit of charge. Use the equation charge = current x time

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This question is about electrical circuits - Edexcel - GCSE Physics - 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. circuit symbol description battery LED switch ... show full transcript

Worked Solution & Example Answer:This question is about electrical circuits - Edexcel - GCSE Physics - Question 1 - 2022 - Paper 1

Step 1

Draw one straight line from each circuit symbol to its description.

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Answer

Battery - connects with the battery symbol.
LED - connects with the LED symbol.
Switch - connects with the switch symbol.
Resistor - connects with the resistor symbol.

Step 2

The current in the lamp is a flow of:

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Answer

B electrons. The current in a lamp is caused by the movement of electrons, which are the charge carriers in a conductor.

Step 3

Calculate the charge that flows through the lamp in a time of 300 s.

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Answer

To find the charge, use the formula:

$\text{charge} = \text{current} \times \text{time}$

Substituting the provided values:

$\text{charge} = 0.21 \text{ A} \times 300 ext{ s} = 63 \text{ C}$

Thus, the charge is 63 C.

Unit of charge: Coulombs (C).

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