Write true or false for each statement:

(a) A fuse wire has a high melting point.

(b) Flow of protons constitutes electric current.

(c) A fuse wire is made of silver.

(d) S.I. unit and commercial unit of electrical energy are same.

(e) Overloading of electric current in circuits can lead to an electrical short circuit.

(f) Our body can pass electricity through it.

(g) The metallic cases of all appliances are insulators of electricity.

(h) The earth wire protects us from an electric shock.

(i) A switch should not be touched with wet hands.

(j) All electrical appliances in a household circuit work at the same voltage.

(k) In a cable, the green wire is the live wire.

(l) A fuse is connected to the live wire.

(m) A switch is connected to the neutral wire.

Fill in the blanks:

(a) The unit in which we pay the cost of electricity is …………… .

(b) The electrical energy consumed in a house is measured by …………… .

(c) In a household electrical circuit, the appliances are connected in …………… with the mains.

(d) A switch is connected to the …………… wire.

(e) The insulated wire in red color in a cable is the …………… wire.

(f) One kilowatt hour is equal to …………… joule.

(g) A fuse wire should have low …………… .

All wires used in electric circuits should be covered with:

1. Coloring material
2. Conducting material
3. an insulating material
4. none of the above

Electrical work done per unit time is:

1. electrical energy
2. electric current
3. electric voltage
4. electrical power