An electrical kettle is rated 3 kW, 250 V. Give reason whether this kettle can be used in a circuit which contains a fuse of current rating 13 A.

From relation

I = $\dfrac{P}{V}$

Substituting the values we get,

$I = \dfrac{3000}{250} \\[0.5em] I = 12 \text{ A}$

Hence, the safe limit of current for kettle is 12 A

Therefore, yes, this kettle can be used in a circuit which contains a fuse of current rating 13 A as the safe limit of current for kettle is 12 A.