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प्रश्न
Which particles constitute the electric current in a metallic conductor?
उत्तर
The flow of negatively charged particles (electrons) in a metallic conductor constitutes electric current.
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संबंधित प्रश्न
If the current through a floodlamp is 5 A, what charge passed in 10 seconds?
(a) 0.5 C
(b) 2 C
(c) 5 C
(d) 50 C
A 5 V battery is connected to two 20 Ω resistors which are joined together in series.
(a) Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
(b) What is the effective resistance of the two resistors?
(c) Calculate the current that flows from the battery?
(d) What is the p.d. across each resistor?
State the relation between work, charge and potential difference for an electric circuit.
A battery of e.m.f. 15 V and internal resistance 3 ohm is connected to two resistors of resistance 3 ohm and 6 ohm in series. Find:
(i) The current through the battery,
(ii) The p.d. between the terminals of the battery.
Define the following:
Semiconductors
State the S.I. units of electrical power.
______ is used to measure the electric current.
One unit of electrical energy consumed is equal to 1000 kilowatt-hour.
