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प्रश्न
What are the two main systems of wiring commonly used in houses? Which of these systems mentioned by you is better and why?
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उत्तर
The two main systems of wiring are:
(i) the tree system, and
(ii) the ring system.
Out of these systems, the ring system is better. The reason is that this system of wiring is cheaper because a low rating wire can be used for connection of appliances.
संबंधित प्रश्न
The SI unit of energy is :
(a) joule
(b) coulomb
(c) watt
(d) ohm-metre
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(i) What is the purpose of the terminal E?
(ii) To which part of the appliance is the terminal E connected?
(iii) To which wire L or N, is the fuse connected and why?
Two resistors A and B of 4 Ω and 6 Ω respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate the power supplied by the battery.
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(i) the electrical energy, and
(ii) the electrical power spent.
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.
A consumer uses 4 lamps of 60 watt, 2 lamps of 40 watt, and 2 lamps of 100 watt. All these are used for 6 hour daily. Find the total bill for 30 days when the rate of energy is 75 paise per unit and the meter rent is Rs. 1.
