Skip to content

Course home

Sign up

4.2.4a Resistance

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647
Question 25

An aluminum wire is placed in an electrical circuit and its resistance is measured. The wire is then replaced with a second aluminum wire with three times the length and half the diameter.

What is the ratio of the resistance of the first wire to the second wire, R1:R2R_1 : R_2R1​:R2​?

A

1:31 : 31:3

B

1:61 : 61:6

C

1:121 : 121:12

D

1:241 : 241:24

Markscheme

4.2.4a Resistance Questions

  1. IGCSE
  2. /Physics
  3. /4.2.4a Resistance

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.

Question bank