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Byju's Answer
Standard VIII
Physics
Current
Fuse of 3A,...
Question
Fuse of
3
A
,
5
A
and
10
A
are available. Calculate and select the fuse for operating an electric iron of
1
k
w
power at
220
V
.
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Solution
Power rating of electric iron
=
1
kW
=
1000
W
V
=
220
V
P
=
V
I
I
=
P
V
=
1000
220
=
4.55
A
Hence, a fuse of rating
5
A can be used because it can bear the current.
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