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Which instrument is used to measure electric current? How should it be connected in a circuit? - Science

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प्रश्न

 Which instrument is used to measure electric current? How should it be connected in a circuit?

Name the device used for measuring electric current. How is it connected in a circuit?

लघु उत्तरीय
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उत्तर

Current is measured by an instrument called an ammeter. An ammeter is always connected in series with the circuit components because it has very low resistance. Connecting it in series ensures that the same current flows through the ammeter as through the circuit, without significantly altering the circuit’s total resistance.

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अध्याय 1: Electricity - Exercise 2

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 1 Electricity
Exercise 2 | Q 26.3

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

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


What is the Flow of Charge Called?


A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?


What is the current in a circuit if the charge passing each point is 20 C in 40 s?


In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result. 

What current flows from the battery?


If the lamps are both the same in the figure given below and if A1 reads 0.50 A, what do A2, A3, A4 and A5 read? 


Consider the circuit given below when A, B and C are three identical light bulbs of constant resistance.   

(a) List the bulbs in order of increasing brightness.
(b) If C burns out, what will be the brightness of A now compared with before?
(c) If B burns out instead, what will be the brightness of A and C compared with before?


State the relation between work, charge and potential difference for an electric circuit.


The work done in moving unit positive charge across two points in an electric circuit is a measure of
           


Name the physical quantity which defines the rate of flow of charge.

Under what circumstances does one get an electric shock from an electrical gadget?

The resistance of 100 W (220 V) bulb is greater than that of 60 W (220 V) bulb. Is it true or false?

Find the effective resistance in the following circuit diagrams (Fig.):


If a fuse contains a 5 A fuse wire and the voltage is 240 V, what is the maximum power (wattage) which may be taken from the circuit?


What is meant by the term 'electromotive force' of a cell?

A 3 pin mains plug is fitted to the lead for a 1 kW electric kettle to be used on a 250 V A.C. supply. Which of the following statements is NOT correct?
(a) A 13 A fuse is the most appropriate value to use.
(b) The brown wire should be connected to the live side of the mains.


Tick (✓) the correct choice among the following :

Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?


Fill in the blank :

1 mA = ............................. A.


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