In the given circuit, the voltmeter reading is 4.5 V. Assuming that the voltmeter is ideal, current through resistance is -
1 A
0.5 A
0.25 A
0.1 A
The voltmeter is ideal, its resistance Fig. shows the current distribution in the circuit . Voltmeter will not draw any current.
Potential difference across 9 resistance
(given) Hence, current in
resistance
The same current passes through
. Obviously,
and
are in series and their equivalent, i.e.,
is in parallel with
between A and B. Dividing the current in the inverse ratio of resistances between A and B,
at junction divides into three parts. Since the resistances
are in parallel between C and D, current will distribute in the inverse ratio of resistances.
So
( being a constant of proportionality)
and
so
Thus current through resistance is
Study 40% syllabus and score up to 100% marks in JEE
5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C. If Na2SO4 is 81.5% ionised, the value of x (K
A capacitor is made of two square plates each of side 'a' making a very small angle
A solution of m-chloroaniline, m-chlorophenol and m-chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A. The leftover organic phase was extracted with d