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प्रश्न
The work done in moving a unit charge across two points in an electric circuit is a measure of ______.
पर्याय
current
potential difference
resistance
power
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उत्तर
The work done in moving a unit charge across two points in an electric circuit is a measure of potential difference.
संबंधित प्रश्न
Choose the correct alternative and rewrite the following sentence.
When the resistance of a conductor increases, the current will ________ increase.
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
In which direction does conventional current flow around a circuit?
What Makes an Electric Current Flow in a Wire?
Which statement/statement is/are correct?
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2. An ammeter has a high resistance.
3. A voltmeter has a low resistance.
(a) 1, 2, 3
(b) 1, 2
(c) 2, 3
(d) 1
State the factors on which the strength of electric current flowing in a given conductor depends.
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Tell the odd one out. Give a proper explanation.
Complete the following sentence:
Fuse wire has a ............ Melting point and it is made of an alloy of ......... and if the current in a circuit rises too high, the fuse wire ...........
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?
The circuit diagram (Fig.) shows a battery of e.m.f. 6 volts and internal
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( c) Current passing through each of the resistors B, C and D, and
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| Quantity | Unit | |
| (a) | Electrical potential | volt |
| (b) | Resistance | ........ |
| (c) | Power | ........ |
| (d) | Energy | ........ |
| (e) | Resistivity | ........ |
Fig. shows a 3 pin plug with the cover removed. The electric cable
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(a) Current drawn,
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An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
Fill in the blank :
1 mA = ............................. A.
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
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Loudspeaker, Bar magnet/magnet, Electric motor, Microphone.
A switch in an electric circuit is used to:
