This question is about electrical circuits. a) Draw one straight line from each circuit symbol to its description. (3) 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 charge = ____________________ unit (Total for Question 1 = 7 marks)

Photo AI

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.

96%

114 rated

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

99%

104 rated

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.

96%

101 rated

Answer

To calculate the charge, use the formula:

ext{charge} = ext{current} imes ext{time}

Substituting in the values:

ext{charge} = 0.21 ext{ A} imes 300 ext{ s} = 63 ext{ C}

The charge that flows through the lamp is 63 coulombs.

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered