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प्रश्न
What is an electric current?
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उत्तर
An electric current is the flow of electric charge called electrons in a conductor and its magnitude is the amount of electric charge passing through a given point of the conductor in one second.
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संबंधित प्रश्न
Fill in the folloing blank with suitable words:
Current is measured in ............... using an ............... placed in ............... in a circuit.
What Makes an Electric Current Flow in a Wire?
Write down the formula which relates electric charge, time and electric current
A flash of lighting carries 10 C of charge which flows for 0.01 s. What is the current? If the voltage is 10 MV, what is the energy?
State the factors on which the strength of electric current flowing in a given conductor depends.
In the circuit shown below, the voltmeter reads 10 V.
(a) What is the combined resistance?
(b) What current flows?
(c) What is the p.d. across 2 Ω resistor?
(d) What is the p.d. across 3 Ω resistor?
Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:
(b) for lighting inside the rooms of the hotel?
Tick(✓) the correct choice in the following:
Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?
What is the purpose of fuse in an electrical circuit?
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.
Which part of an electrical appliance is earthed?
One unit of electrical energy consumed is equal to 1000 kilowatt-hour.
What is the SI unit for the current?
