A kitchen circuit is protected by a single re-wirable fuse
PHYSICS · Subjective · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
A kitchen circuit is protected by a single re-wirable fuse. Three appliances are connected in parallel to the 230 V mains: a toaster marked 920 W, an electric kettle marked 1840 W and a mixer marked 300 W.
(a) Calculate the current drawn by each appliance when all are operating simultaneously.
(b) Determine the total current in the circuit.
(c) The householder can choose one of the following fuse wires for the circuit: 10 A, 15 A, 20 A. Identify which fuse should be fitted and explain why.
(d) Explain with calculation whether replacing the chosen fuse with the next higher rating listed would be advisable or not.