A vacuum cleaner has a power of 800 W when operating at a voltage of 230 V.
State the equation linking power, current and voltage.
Show that the current in the vacuum cleaner is about 3.5 A.
Which fuse rating would be suitable for the vacuum cleaner?
The vacuum cleaner uses mains electricity, which provides alternating current (a.c.).
Describe the difference between alternating current (a.c.) and direct current (d.c.).
State a source of direct current.