हिंदी

Calculate the number of electrons constituting one coulomb of charge.

Advertisements
Advertisements

प्रश्न

Calculate the number of electrons constituting one coulomb of charge.

संक्षेप में उत्तर
Advertisements

उत्तर

One electron possesses a charge of 1.6 × 10-19C, i.e., 1.6 × 10-19C of charge is contained in 1 electron.

∴ 1 C of charge is contained in `1/(1.6 xx 10^(-19))`

= 6.25 × 1018 

= 6 × 1018

Therefore, 6 × 1018 electrons constitute one coulomb of charge.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 11: Electricity - Intext Questions [पृष्ठ १७२]

APPEARS IN

एनसीईआरटी Science [English] Class 10
अध्याय 11 Electricity
Intext Questions | Q 3. | पृष्ठ १७२

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Three 2 V cells are connected in series and used as a battery in a circuit. 

How many joules of electrical energy does 1 C gain on passing through (i) one cell (ii) all three cells?


Which particles constitute the electric current in a metallic conductor?


If 20 C of charge pass a point in a circuit in 1 s, what current is flowing?


What is an electric current?


If the charge on an electron is 1.6 × 1019 coulombs, how many electrons should pass through a conductor in 1 second to constitute 1 ampere current?


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.


In the circuit diagram  given below, three resistors R1, R2, and R3 of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown 

  

Calculate:

  1. current through each resistor.
  2. total current in the circuit. 
  3. total resistance in the circuit.

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?


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

What do you mean by direct current?

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


What is the function of a step-up transformer?


Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply of the energy supplied in kWh to the three heaters in 5 hours.


An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?


Define an electric current.


The flow of electric charge per unit time is called potential difference.


Problems for practice:

If 3A current flows through a circuit, then convert the current in terms of a milliampere.


What is the SI unit for the current?


What does the direction of current convey?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×