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q the resistance of a nichrome wire at 0oc is 10 omega if the temperature coefficient of resistance is 0004oc find its resistance at boiling point of
q state faradays laws of electrolysis first law the mass of a substance unconventional at an electrode is directly proportional to the charge passing
q compare the emf and the potential difference comparison of emf and potential difference1 the difference of potentials among the two terminals of a
q state kirchoffs second law in electricity kirchoffs second law voltage law the algebraic total of the products of resistance as well as current in
q state kirchoffs first law in electricity kirchoffs first law current law the algebraic total of the currents meeting at any junction in a circuit
q give any three applications of the superconductorsi high efficiency ore-separating machines may be built using superconducting magnets which can be
q state ohms law at a steady temperature that the steady current flowing through a conductor is directly proportional to the potential difference
q define mobility give its unitthe mobility is defined as the drift velocity obtains per unit electric field the unit of a mobility m2v 1s
q define drift velocitydrift velocity is described as the velocity with which free electrons get drifted towards the positive terminal when an
q find the electric potential at a distance 009 m from a charge of 4 x 10-7 c the electric potential v 14piepsilono q r 9 x 109 x 4 x 10-7 9 x
q what do you mean by additive nature of charges give an exampleadditive nature of charge the entire electric charge of a system is equal to the
q write the applications of a capacitor applications of capacitors i they are utilized in the ignition system of automobile engines to eliminate
q what is microwave oven how it works microwave oven it is utilized to cook the food in a short time when the oven is manage the microwaves are
q what is a capacitor define capacitance i a capacitor is a apparatus for storing electric chargesii the capacitance of a conductor is defined like
q what are non-polar molecules give an example i a non-polar molecule is one in that the centre of gravity of the positive charges coincides with the
q three capacitors every of capacitance 3 pf are connected in parallelfind effectual capacitancethe effectual capacitance cp c1 c2 c3 9 9 9 27
q what is electrostatic shielding i it is the method of isolating a certain region of space from external fieldii it is basis on the fact that
q define electric flux give its unitthe electric flux is described as the total number of electric lines of force crossing through the given area and
q what is an electric dipole define the dipole moment two equal as well as opposite charges separated by a very small distance constitute an electric
q state the law of conservation of electric charges the entirety charge in an isolated system always remains constant for instance uranium 92u238 can
q give any three properties of electric lines of force properties of lines of forces i lines of force begin from positive charge and terminate at
q what is action of points corona discharge what is its use the seep out of electric charges from the sharp points on the charged conductor is known
q what is dielectric polarization the arrangement of the dipole moments of the permanent or induced dipoles in the direction of applied electric
q what are polar molecules give an examplei a polar molecule is one in that the centre of gravity of the positive charges is separated from the