Advertisements
Advertisements
प्रश्न
Which cable, one rated 15A and the other rated 5A will be thicker? Give a reason.
Advertisements
उत्तर
The cable rated 15A will be thicker. The reason is that thicker the wire, less is its resistance and hence higher is its current carrying capacity.
संबंधित प्रश्न
1 calorie = _________ joule.
Name the S.I. unit of electrical energy. How is it related to Wh?
A current of 2 A is passed through a coil of resistance 75Ω for 2 minutes. (a) How much heat energy is produced? (b) How much charge is passed through the resistance?
A servo voltage stabiliser restricts the voltage output to 220 V ± 1%. If an electric bulb rated at 220 V, 100 W is connected to it, what will be the minimum and maximum power consumed by it?
An electric kettle is rated 3kW, 250V. What should be the current capacity of the fuse with it?
What is the resistance of an appliance rated at V volt, P watt?
The resistance of filament of an electric heater is 500 Ω It is operated at 200V for 1 hour daily. Calculate the current drawn by the heater and the energy consumed in joule.
What is the commercial unit of electrical energy? Represent it in terms of joules.
A family uses 8 kW of power. Direct solar energy is incident on the horizontal surface at an average rate of 200 W per square meter. If 20% of this energy can be converted to useful electrical energy, how large an area is needed to supply 8 kW?
