Answer to Question #52275 in Physics for vi

Question

Which of the following cables is suitable for connecting a 1.8 kW appliance to a 240V mains
10 A cable
5 A cable
2 A cable
1 A cable
16 Which of the following may not be classified as a source of electrical fire?
loose contact in electric circuits
inappropriate rating of cables used for connection
improper wiring
broken fuse wire
17 Which of the following is NOT correct?
conductance of a piece of conductor is directly proportional to its cross-sectional area
resistence of a piece of conductor is directly proportional to its length
the heat developed when current flows in a piece of conductor is inversly proportional to its cross-sectional area
the heat developed when current flows in a piece of conductor is directly proportional to its cross-sectional area
18 A safe conduct which is necessary to avoid electrical mishap in the laboratory includes all of the following EXCEPT
proper flex routing
proper use of plugs
over-loaded socket
use of suitably rated fuse