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CBSE Class 12-science Answered

 What is current
Asked by Sharmahimanshi | 07 Dec, 2018, 08:52: AM
answered-by-expert Expert Answer

An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire.

It can also be carried by ions in an electrolyte.

The moving charged particles in an electric current are called charge carriers.
In metals, one or more electrons from each atom are loosely bound to the atom, and can move freely about within the metal.
These conduction electrons are the charge carriers in metal conductors.
 
The SI unit for measuring an electric current is the ampere,
which is the flow of electric charge across a surface at the rate of one coulomb per second.
Answered by Thiyagarajan K | 07 Dec, 2018, 09:34: AM

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CBSE 12-science - Physics
solve option e
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Asked by dasrituparna1999 | 13 Apr, 2024, 06:56: AM
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CBSE 12-science - Physics
The number of moles in an elemental sample is just the ratio of the mass m to atomic mass 4. n= A The number of protons N, in an elemental sample is Z (atomic number) times the number of moles of Avogadro's number NA N=ZnN P A Copper has an atomic mass of 63.5 g/mole and 29 protons per atom. If such an atom were neutral, then it would have as many protons as electrons. If you remove electrons from a neutral state, then you get a net positive charge. Given a 54 gram ball of copper with a net charge of 2.2 µC, what fraction of the copper's electrons have been removed?
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CBSE 12-science - Physics
which answer is correct and most appropriate with explanation
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CBSE 12-science - Physics
8212
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CBSE 12-science - Physics
ans the questions wit reason
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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
A coil of N turns is placed in a magnetic field B such that B is perpendicular to the plane of the coil. B changes with time as B=B0 cos 2元 where T is time period. The magnitude of emf-induced in the coil will be maximum at
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Asked by mishrigupta19319 | 05 Apr, 2024, 12:01: PM
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CBSE 12-science - Physics
a charge of 2microcoulomb experience a force of 6N when placed at a point in an electric field .find electric field at that point
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