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Figure 2
Figure 2 below shows a circuit which is used to measure resistance of a piece of metallic wire X…
Figure 2 below shows a circuit which is used to measure resistance of a piece of metallic wire X.
(i)[1.0]
Write the mathematical formula to determine the value of X.
(ii)[1.0]
What happens to the position of the null point if the wire X is replaced by another wire having greater resistance?
Answer
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From ISC 2026 Improvement Physics Paper 1, question 4.