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1.7.1a Energy stores and energy transfers

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Question 41

A student sets up a loudspeaker connected to an audio system to play music. Which row in the table correctly describes the main energy change taking place inside the loudspeaker?

Input energyOutput energyAelectricalsoundBsoundelectricalCchemicalelectricalDelectricalthermal only \begin{array}{|c|c|c|} \hline & \text{Input energy} & \text{Output energy} \\ \hline \textbf{A} & \text{electrical} & \text{sound} \\ \hline \textbf{B} & \text{sound} & \text{electrical} \\ \hline \textbf{C} & \text{chemical} & \text{electrical} \\ \hline \textbf{D} & \text{electrical} & \text{thermal only} \\ \hline \end{array} ABCD​Input energyelectricalsoundchemicalelectrical​Output energysoundelectricalelectricalthermal only​​
A

Row A

B

Row B

C

Row C

D

Row D

Markscheme

1.7.1a Energy stores and energy transfers Questions

  1. IGCSE
  2. /Physics
  3. /1.7.1a Energy stores and energy transfers

229 exam-style questions on CIE IGCSE Physics 1.7.1a Energy stores and energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.

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