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प्रश्न
What is the conventional direction of the flow of electric current? How does it differ from the direction of flow electrons?
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उत्तर
The conventional direction of the flow of electric current is from the positive terminal of a cell or a battery to its negative terminal through the outer circuit, whereas the direction of flow of electrons is from the negative terminal to the positive terminal of a cell.
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संबंधित प्रश्न
What does an electric circuit mean?
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In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result.
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An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
(i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY.
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(b) 1 A
(c) 2 A
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Calculate:
- current through each resistor.
- total current in the circuit.
- total resistance in the circuit.
An electric bulb is rated as 10 W, 220 V. How many of these bulbs can be connected in parallel across the two wires of 220 V supply line if the maximum current which can be drawn is 5 A?
If a charge of 420 C flows through a conducting wire in 5 minutes what is the value of the current?
A charge of 80 C flows in a conductor for 2 minutes.
(a) Calculate the current flowing through the conductor.
(b) If the current through a heater is 4 A what charge must be passing in 8 seconds?
Find the effective resistance in the following circuit diagrams (Fig.):
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(a) What do the symbols Q and V represent?
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State the S.I. units of electrical power.
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