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प्रश्न
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उत्तर
Given, P = 1.5 kW= 1500 W, p.d. = 220 V
We know that,
P=VI
I = `"P"/"V" = 1500/220` = 6.8 A
Thus a fuse of rating 7A may be used with the appliance and it should be connected in the live wire before connectimg it to the appliance.
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संबंधित प्रश्न
What is the Flow of Charge Called?
Fill in the folloing blank with suitable words:
A current is a flow of ............... .For this to happen there must be a ............... circuit.
The lamps in a house hold circuit are connected in parallel because:
(a) this way they required less current
(b) if one lamp fails the others remain lit
(c) this way they require less power
(d) if one lamp fails the other also fail
Distinguish between an open and a closed circuit.
What is the purpose of fuse in an electrical circuit?
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 |
Water : pipe :: Electric current : ______.
The flow of electric charge per unit time is called potential difference.
