1) AT the time of short circuit,the current in the circuit : a) reduces substantially b) increases heavily c) does not change d) varies continuously 2) A 1.25 KW heater works on a 220v mains supply. what current rating would a suitable fuse have ? a) 2 A b) 5 A c) 10 A d) 13 A 3) The maximum number of 40 W tube-lights connected in parallel which can safely be run from a 240 v supply with a 5 A fuse is : a) 5 b) 15 c) 20 d) 30 4) in normal use , a current of 3.5 A flows through a hair dryer . choose a suitable fuse from the following : a) 3 A b) 5 A c) 10 A d) 30 A

physics

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