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CBSE Class 12-science Answered

Why we use a test charge of small magnitude?
Asked by Topperlearning User | 17 Apr, 2015, 10:23: AM
answered-by-expert Expert Answer

We use a test charge of small magnitude so that it does not disturb the distribution of the charges whose electric field we wants to measure otherwise the measured field will be different from the actual field.

Answered by | 17 Apr, 2015, 12:23: PM

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CBSE 12-science - Physics
13./A point charge of 12 µC is located at the centre of a cube of side 1 m. Calculate the electric flux through each face of the cube. (H.S.S.C.E.1999~S) [Ans. 2.26\times10^{5}N~m^{2}C^{-1}]
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CBSE 12-science - Physics
what is si unit of electric flux
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CBSE 12-science - Physics
Help in this question.
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Asked by carnivalgirl8421 | 29 Jun, 2022, 10:06: PM
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CBSE 12-science - Physics
Charge of 2C is placed at the centre of a cube of volume 8 cm^3. What is the electric flux passing through one face? 
Asked by hitanshu04 | 27 May, 2021, 07:33: PM
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CBSE 12-science - Physics
The electric field components in are Ex = A+Bx, Ey = Ez = 0, in which A = 800 N/C , B= 100 N/C-m. Calculate  (a) the flux through the cube (b) the charge within the cube. Assume that a = 0.1 m
Asked by hitanshu04 | 22 May, 2021, 07:41: PM
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CBSE 12-science - Physics
Can we use the formula electric flux is equal to  E×A cos theta
Asked by jayasartasarta995 | 09 May, 2021, 10:32: PM
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CBSE 12-science - Physics
what is flux
Asked by dasdebasish25082003 | 22 Aug, 2020, 06:01: AM
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CBSE 12-science - Physics
Unit of Electric flux_?   
Asked by mddanis71895 | 21 Aug, 2020, 06:45: PM
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CBSE 12-science - Physics
A point charge is placed at the centre of a closed Gaussian spherical  surface of radius r. Electric flux passing through the surface is Φ. How is  the electric flux Φ through the surface affected when the following  changes are made in turn: (i) The spherical surface is replaced by a cylindrical surface of the  same radius? (ii) The point charge is replaced by an electric dipole? Justify your  answer in each case. 
Asked by shitikanthdas31 | 15 Jun, 2019, 09:58: AM
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CBSE 12-science - Physics
Plzz explain
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Asked by dharaelect | 27 Mar, 2019, 10:28: PM
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