Paper 1 H - SAMPLE SET 1 Q21
21) (a) (i) Write down the name of the rule which can be used to predict the direction of the force perpendicular to a current-carrying conductor in a magnetic field. [1]
A student places four wires of different lengths perpendicular to different magnetic fields with different currents flowing.
Look at the table of their results.
A student places four wires of different lengths perpendicular to different magnetic fields with different currents flowing.
Look at the table of their results.
(ii) Use the data to show that wire D experiences the highest force. Show your working. [2]
(b) (i) The student decides to build a model transformer.
The transformer is a step-up transformer which doubles the input voltage.
Describe how they could build this step-up transformer in a science laboratory. [4]
(ii) Suggest one risk associated with this experiment and how it can be reduced. [2]
(c) Describe how a microphone works. [2]
(Total for Question 21 = 11 marks)
(b) (i) The student decides to build a model transformer.
The transformer is a step-up transformer which doubles the input voltage.
Describe how they could build this step-up transformer in a science laboratory. [4]
(ii) Suggest one risk associated with this experiment and how it can be reduced. [2]
(c) Describe how a microphone works. [2]
(Total for Question 21 = 11 marks)