MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Domestic Electric Circuits

a What curren...

Question

(a) What current is taken by a 3 kW electric geyser working on 240 V mains ?

(b) What size fuse should be used in the geyser circuit ?

Open in App

Solution

(a) P = 3kW = 3000W
V = 240V
P = V x I
I = P/V
= 3000/240 = 12.5 A.
(b) A 13A fuse should be used in the geyser circuit.

Suggest Corrections

thumbs-up

3

Similar questions

Q. An electric geyser has the ratings 2000 W, 220 V marked on it. What should be the minimum rating, in whole number, of a fuse wire that may be required for safe use with this geyser?

Q. A geyser has the rating 2000 W-220 V marked on it. What should be the minimum current rating of the fuse wire to be used?

Q. A geyser is rated 1.5 kW at 220 V. What should be the rating of the fuse to be used?

Q. An electric kettle is rated

3 k W

250 V

. What is the current in kettle and whether this kettle can be used in a circuit which contains a

13 A

A power circuit uses a cable having three different wires.

(a) Name the three wires of the cable.

(b) Between which of the two wires should the heating element of an electric geyser be connected?

(c) To which wire should the metallic case of the geyser be connected?

(d) To which wire should the switch and fuse be connected?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Domestic Electric Circuits

PHYSICS

Watch in App

explore_more_icon

Explore more

Domestic Electric Circuits

Standard X Physics

Join BYJU'S Learning Program

CrossIcon