Explanation:
The minimum capacitance can be obtained by connecting all capacitors in series. It can be calculated as follows:
$\frac{1}{\text{C}}=\frac{1}{6}+\frac{1}{6}+\frac{1}{6}=\frac{1}{2}$
$\Rightarrow\text{C}=2\mu\text{F}$
The maximum capacitance can be obtained by connecting all capacitors in parallel. It can be calculated as follows:
$\text{C}=6+6+6=18\mu\text{F}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The current flowing in a coil of resistance 90 W is to be reduced by 90%. What value of resistance should be connected in parallel with it
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(a) 9 W |
(b) 90 W |
(c) 1000 W |
(d) 10 W |
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(a) 5 sec |
(b) 10 sec |
(c) 20 sec |
(d) 30 sec |
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(a) |
(b) |
(c) |
(d) |
When the kinetic energy of an electron is increased, the wavelength of the associated wave will
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(a) Increase |
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(b) Decrease |
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(c) Wavelength does not depend on the kinetic energy |
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(d) None of the above |
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(a) Seebeck electro motive force (e.m.f.) |
(b) Peltier electro motive force (e.m.f.) |
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(c) Thomson electro motive force (e.m.f.) |
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For reading small letters with a lens:
The mass of ions deposited during a given interval of time in the process of electrolysis depends on
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(a) The current |
(b) The resistance |
(c) The temperature |
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(a) 4μF |
(b) |
(c) |
(d) 3 μF |
