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if a current of 20a flows for five minutes find the quantity of electricity transferred quantity of electricity q it 20 x 5 x 60 6000c
unit to measure the electric charge qthe unit used to measure the quantity of electrical charge q is called the coulomb
define electric currentif an electric pressure or voltage is applied across any material there is a tendency for electrons to move in a certain
20 cells with emf 145v and internal resistance 05omega for each cells is linked 4 rows which every rows having of 5 cells in series load resistance
a battery having of 5 cells with emf and internal resistance of every cell is 15v and 025omega connected in series if the current flow by load
one battery having of eight cells in parallel emf and internal resistance of every cells is 15v and 04omega find the value of current if an external
one battery having of four cells connected in series emf of each cell is 145v and internal resistance of 004omega if a load resistance of 5omega is
ten 15v cells in series each cells having an internal resistance of 03omega are connected series to a load of 25omegadetermine ithe current flowing
a battery having of five cells in series each cell is 25v and internal resistance is 005 omega a battery is linked to the load resistance of 15omega
a battery having of 12 cells are divided in three group which each group having of four cells in series the three groups are joined in parallel the
15 cells with emf for every cell are 15v and internal resistance 03omega is linked in parallel calculate the value of current flow if the external
an external resistance of 10 omega is linked to the terminal of a battery having 10 cells connected in series emf for every cells and internal
types of cells and batteries are-a carbon-zinc cellb nickel-cadmium cellc alkaline celld d edison celle mercury
the basic operation of battery a simple cell comprises two dissimilar conductors electrodes in an electrolyte such a cell comprises copper and
the relationship between cell and batteries generally a cell delivers a certain voltage that is a function of what chemical reactions are taking
if a current of 10a flows for four minutes find the quantity of electricity transferredquantity of electricity qit coulombs i 10a and t 4 times 60
to convert a galvanometer to a voltmeter you should add aa high resistance in seriesb high resistance in parallelc low resistance in seriesd low
the potential drop between the terminals of a battery is equal to the batterys emf whena no current is drawn from the batteryb a very large current
an electroscope charged without contacting a charged body is charged bya inductionb conductionc convectiond insulationansan electroscope charged
ferroelectric materials are characterised bya very high degree of polarisationb a sharp dependence of polarisation on temperaturec non-linear
tick of the property which is different from the group a ductility b resistivity c tensile
tick off the material which is different from the group a constantan b manganin c nichrome
semi-conductors have temperature coefficient of resistance a negative
atoms with four valence electrons are good conductors this statement is true or falseans atoms are good conductors with four valence electrons
hysteresis loss least depends ona frequency b magnetic field