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4.2.4a Resistance

Two wires $X\,$ and $Y\,$ are made from the same metal and have the same electrical resistance.

Which row in the table below identifies a possible pair of values for the dimensions of $X\,$ and $Y$ ?

	Length of $X$ / $cm\text{cm}$	Diameter of $X$ / $mm\text{mm}$	Length of $Y$ / $cm\text{cm}$	Diameter of $Y$ / $mm\text{mm}$
A	60	0.30	540	0.10
B	60	0.30	540	0.45
C	60	0.30	540	0.90
D	60	0.30	540	2.70

Row A

Row B

Row C

Row D

4.2.4a Resistance Questions

132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.

Two wires $X\,$ and $Y\,$ are made from the same metal and have the same electrical resistance.

Which row in the table below identifies a possible pair of values for the dimensions of $X\,$ and $Y$ ?

	Length of $X$ / $cm\text{cm}$	Diameter of $X$ / $mm\text{mm}$	Length of $Y$ / $cm\text{cm}$	Diameter of $Y$ / $mm\text{mm}$
A	60	0.30	540	0.10
B	60	0.30	540	0.45
C	60	0.30	540	0.90
D	60	0.30	540	2.70

Row A

Row B

Row C

Row D

132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.