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4.2 Electrical quantities

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Question 7

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

Which row identifies a possible pair of values for X X\,X and for YYY?

Length of XXX / cm\text{cm}cmDiameter of XXX / mm\text{mm}mmLength of YYY / cm\text{cm}cmDiameter of YYY / mm\text{mm}mm
A400.303600.10
B400.303600.30
C400.303600.90
D400.303602.70
A

Row A

B

Row B

C

Row C

D

Row D

Markscheme

4.2 Electrical quantities Questions

  1. IGCSE
  2. /Physics
  3. /4.2 Electrical quantities

452 exam-style questions on CIE IGCSE Physics 4.2 Electrical quantities, covering 4.2.1a Positive and negative charge, 4.2.1b Charging by friction and detecting charge, 4.2.1c Electrical conductors and insulators, 4.2.1d Electric fields and electric field patterns, 4.2.2a Electric current, charge and measuring current, 4.2.2b Conduction in metals and the direction of current, 4.2.2c Direct current and alternating current, 4.2.3a Electromotive force, 4.2.3b Potential difference and voltmeters, 4.2.4a Resistance, 4.2.4b Resistance of a metallic wire, 4.2.4c Current–voltage graphs, and 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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