Two fuse wires are rated 5 A and 20 A. Which of the two is (i) thicker, (ii) longer?

(a) 'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW, 200 V?

(b) Name two safety devices which are connected to the live wire of a household electric circuit.

Name the colour code of the wire which is connected to (i) metallic body of an appliance, (ii) switch for the appliance.

What is a fuse? Name the material of fuse. State one characteristic of the material used for fuse.