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प्रश्न
What happens to the other bulbs in a parallel circuit if one bulb blows off?
उत्तर
When one of the bulbs in a parallel circuit blows off, it does not affect the other bulbs
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संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use:
Rheostat (variable resistance)
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
If the amount of electric charge passing through a conductor in 10 minutes is 300 C, the current flowing is:
(a) 30 A
(b) 0.3 A
(c) 0.5 A
(d) 5 A
State the factors on which the strength of electric current flowing in a given conductor depends.
Define the term resistivity and state its S.I unit.
The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.
Find the effective resistance in the following circuit diagrams (Fig.):
Fig. shows a 3 pin plug with the cover removed. The electric cable
connected to the plug contains 3 wires with colour coded insulation namely brown, blue and green.
- Identify each of the colour coded wires by stating to which of the
terminals A, B or C in the diagram they should be connected. - Identify the terminal through which no current passes in normal
circumstances. - What is the purpose of the earthed wire connected to an electric
appliance like an electric heater? Describe how it works.
Electrical appliances have voltage and power ratings as listed below. Which
has the larger working resistance?
| Appliances | Voltage (V) | Power (W) |
| (a) Washing machine | 250 | 3000 |
| ( b) Television | 240 | 160 |
| (c)240 | 240 | 1500 |
| ( d) Hair curler | 250 | 20 |
| ( e) Car head lamp | 12 | 36 |
The SI unit for electric current is the coulomb.
