Skip to content

Course home

Sign up

4.2 Electrical quantities

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102
Question 29

A metal wire of length 80 cm and cross-sectional area 0.15 mm2 has a resistance of 6.0 Ω.

What is the resistance of a wire of the same metal of length 40 cm and cross-sectional area of 0.45 mm2?

A

1.0 Ω1.0\ \Omega1.0 Ω

B

3.0 Ω3.0\ \Omega3.0 Ω

C

9.0 Ω9.0\ \Omega9.0 Ω

D

36 Ω36\ \Omega36 Ω

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.

Question bank