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प्रश्न
Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.
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उत्तर
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संबंधित प्रश्न
The SI unit of charge is volt.
Draw the electrical symbols of the following components and state its use
Wire crossing
Which of the following units could be used to measure electric charge?
(a) ampere
(b) joule
(c) volt
(d) coulomb
Which particles constitute the electric current in a metallic conductor?
In which direction do electrons flow?
What is an Ammeter? How is It Connected in a Circuit? Draw a Diagram to Illustrate Your Answer.
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?
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 12 Ω. How much current would flow through the 12 Ω resistor?
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
Give three reasons why different electrical appliances in a domestic circuit are connected in parallel.
In which of the following cases more electrical energy is consumed per hour?
(i) A current of 1 ampere passed through a resistance of 300 ohms.
(ii) A current of 2 amperes passed through a resistance of 100 ohms.
State three factors on which the heat produced by an electric current depends. How does it depend on these factors?
State the S.I. unit of current.
Draw a schematic diagram of an electric circuit consisting of a battery of two cells each of 1.5 V, 5 Ω, 10 Ω and 15 Ω resistors and a plug key, all connected in series.
Name the principle on which a transformer works.
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
In the process of current flow through a conductor, the amount of charge passing per unit time gives:
