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प्रश्न
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उत्तर
We know that, P =VI
I = `"P"/"V" = 40/220` = 0.11 A
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संबंधित प्रश्न
The SI unit of charge is volt.
Calculate the number of electrons constituting one coulomb of charge.
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
Tick(✓) the correct choice in the following:
A three pin plug is connected to the lead for a 1 kW electric iron to be
used on a 250 V supply. Which of the following statements is not correct?
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
State the condition when it is advantageous to connect cells in parallel.
In current electricity, a positive charge refers to ______.
Match the following:
| 1. | 1 mA | a. | series |
| 2. | 1 pA | b. | ohmmeter |
| 3. | Ammeter | c. | 10-6 ampere |
| 4. | Electrical resistivity | d. | 10-3 ampere |
In metallic conductors, the charge carriers responsible for producing electric current are:
