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2.3.1a Thermal conductors and thermal insulators

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Question 46

Some electric cookers have solid metal hobs that do not glow when hot.

Other electric cookers have glass-ceramic hobs with a heater underneath that glows bright red.

With both cookers, a metal pan is placed in direct contact with the hob so that there is no air gap between them.

Which statement is correct?

A

The glass-ceramic hob transfers energy to the base of the pan by convection.

B

The glass-ceramic hob transfers less energy by radiation to the base of the pan than the metal hob.

C

The metal hob transfers energy to the base of the pan by conduction.

D

The metal hob transfers energy to the base of the pan by convection.

Markscheme

2.3.1a Thermal conductors and thermal insulators Questions

  1. IGCSE
  2. /Physics
  3. /2.3.1a Thermal conductors and thermal insulators

67 exam-style questions on CIE IGCSE Physics 2.3.1a Thermal conductors and thermal insulators. Each one has a worked solution and a mark scheme showing where the marks go.

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