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4 marksElectrical Circuits

CAPE Physics Unit 2 · 2008 (T&T) · Paper 2 · Question 4(b)

Circuit with two batteries and resistors as shown in Figure 8.

Given that current y is 2.0 A and current z is 1.0 A, calculate the e.m.f. of the battery labelled B.

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Other parts of this question

  1. 4(a)(i)a)Describe how values for the graph in Figure 5 could be obtained.[2 marks]
  2. 4(a)(i)b)Figure 6 shows a thermistor in a water bath. Copy Figure 6 and complete it by drawing in the required circuit.[2 marks]
  3. 4(a)(ii)a)Find the potential at point Q in the bridge circuit of Figure 7.[3 marks]
  4. 4(a)(ii)b)At what thermistor temperature will the galvanometer read zero?[4 marks]

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