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प्रश्न
Complete the following table. The first answer has been given as an example
| Quantity | Unit |
|
(a) Electrical potential Volt ( b) Resistance ( c) Power ( d) Energy ( e) Resistivity |
Volt ........ .......... ............ .............. |
उत्तर
| Quantity | Unit |
| 1. Electrical potential | volt |
| 2. Resistance | ohm |
| 3. Power | watt |
| 4. Enerqy | Joule |
| 5. Resistivity | Ohm-meter |
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संबंधित प्रश्न
Define the unit of current.
Three 2 V cells are connected in series and used as a battery in a circuit.
How many joules of electrical energy does 1 C gain on passing through (i) one cell (ii) all three cells?
An electric bulb of resistance 20 Ω and a resistance wire of 4 Ω are connected in series with a 6 V battery.
Draw the circuit diagram, and calculate:
(a) total resistance of the circuit.
(b) current through the circuit.
(c) potential difference across the electric bulb.
(d) potential difference across the resistance wire.
What happens to the other bulbs in a parallel circuit if one bulb blows off?
Consider the circuit given below:
(a) In which circuit are the lamps dimmest?
(b) In which circuit or circuits are the lamps of equal brightness to the lamps in circuit (i)?
(c) Which circuit gives out the maximum light?
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:
The outer casing of an electric iron is generally connected to earth in order
to
For current to flow, one needs art open circuit.
