Diagram below represents a metre bridge used to determine the resistance of an electrical component, X.

Diagram below represents a metre bridge used to determine the resistance of an electrical component, X.

From the diagram,
i) Explain why wide brass strips are used as terminals.
ii) Explain why a cell of low e.m.f is preferable.
iii) If null deflection was obtained when l1 was 60.0cm. Calculate the resistance of component marked X.
iv) State three ways of ensuring that the error is minimized.

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i).To minimise resistance due to Terminals.
ii) To minimise current and the resulting heating effect that would alter resistance.

iv) Use of short connecting wires Use of a source with low e.m.f The value of known resistance R should be
comparable to X.

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sharon kalunda answered the question on September 30, 2019 at 11:06

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