Physics
All wires used in electric circuits should be covered with:
- Coloring material
- Conducting material
- an insulating material
- none of the above
Related Questions
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 …………… .
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 Electrical work done per unit time is:
- electrical energy
- electric current
- electric voltage
- electrical power
One kilowatt is equal to:
- 100 watt
- 1000 watt
- 10 watt
- none of these