Physics
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 …………… .
Static Electricity
3 Likes
Answer
(a) The unit in which we pay the cost of electricity is kWh.
(b) The electrical energy consumed in a house is measured by kWh meter.
(c) In a household electrical circuit, the appliances are connected in parallel with the mains.
(d) A switch is connected to the live wire.
(e) The insulated wire in red color in a cable is the live wire.
(f) One kilowatt hour is equal to 3.6 x 106 joule.
(g) A fuse wire should have low melting point.
Answered By
3 Likes
Related Questions
The purpose of an electric meter in a house is:
- to give the cost of electricity directly
- to give the consumption of electrical energy
- to safeguard the circuit from electrical short circuit
- to put on or off the mains.
If out of the two lighted bulbs in a room, one bulb suddenly fuses, then:
- the other bulb will glow more
- the other bulb will glow less
- the other bulb will also fuse
- the other bulb will remain lighted and unaffected.
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.
Match the following:
Column A Column B (a) Electric power (i) volt (b) kWh (ii) joule (c) Electric current (iii) volt x ampere (d) Electrical energy (iv) watt (e) watt (v) ampere (f) Potential difference (vi) electrical energy