An electric heater is rated 500 W, 200 V.
rn
a) Find the current passing through the heater.
rn
b) Calculate the current rating of the fuse wire used for the heater.

Open in App

Solution

r= v^2/w
r = 40000/500 = 80 ohms
v = ir
i = v/r = 200 / 80 = 2.5 A .
Therefore fuse wire must be rated at 2.5A

Suggest Corrections

Similar questions

500 W

250 V

What must be the current rating of the fuse for the safe use of an electric heater rated 1188 W, 120 V?

An electric heater is rated 1000 W-200 V. The current flowing through the heater is:

240

2 A

120

A fuse of rating 5 A can be used for an electric heater is rated 2 kW, 220 V.

Join BYJU'S Learning Program