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प्रश्न
Define an electric current.
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उत्तर १
An electric current is measured by the amount of electric charge moving per unit time at any point in the circuit.
उत्तर २
The magnitude of an electric current is the number of electric charges flowing through a conductor in one second.
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संबंधित प्रश्न
1 A = _________ mA
- 102
- 103
- 10-3
- 10-6
Fill in the blank:
To increase the effective resistance in a circuit the resistors are connected in _____________.
Draw the electrical symbols of the following components and state its use
Wire crossing
Draw the electrical symbols of the following components and state its use:
Ammeter.
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Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
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<p> Define the unit of electric current (or Define ampere).
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(a) 0.5 Ω
(b) 6 Ω
(c) 12 Ω
(d) 24 Ω
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(a) Live wire (b) neutral wire
(c) earth wire (d) either earth or neutral wire
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The circuit diagram (Fig.) shows a battery of e.m.f. 6 volts and internal
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(b) P.d. across the terminals of the resistor B,
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( d) P.d. across the terminals of the battery.
Calculate the current through a 60 W lamp rated 250 V. If the line voltage falls to 200 V, how is power consumed by the bulb affected?
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What determines the direction of flow of electrons between two charged conductors kept in contact?
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
Coulomb is the SI unit of ____________.
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 |
Electric current passes through a metallic conductor due to the movement of ______.
For current to flow, one needs art open circuit.
