Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. IGCSE
  3. Physics Edexcel
  5. Question bank

Mains electricity

EasyMediumHard
12345678910111213141516171819202122232425262728
Question 22
a.

Explain the meaning and safety function of each of the following terms or features associated with mains electricity:

(i) The PVC outer insulation jacket on a flexible three-core mains cable.

(ii) A 3 A cartridge fuse fitted in a plug.

(iii) The protective earth conductor connected to the exposed metal chassis of an appliance.

(iv) The safety design of a Class II (double-insulated) appliance.

[8]
b.

Modern electrical distribution boards utilise miniature circuit breakers (MCBs) rather than traditional cartridge fuses. State two operational advantages of using an MCB instead of a cartridge fuse.

[2]

Mains electricity Questions

  1. IGCSE
  2. /Physics
  3. /Mains electricity