Advertisements
Advertisements
प्रश्न
Find the effective resistance in the following circuit diagrams (Fig.):
उत्तर
(b) In the given network, the parallel combination of resistors 40 Ω and 120 Ω is connected in series with the 10 Ω and 20 Ω resistors.
:. Resistance in para!! el is:
`1/"R"_"P" = 1/40 + 1/120 = 4/120 = 1/30`
.·. `"R"_"p"` =3Ω
Effective resistance between P and Q is
R = 10 + 30 + 20 = 60 Ω
APPEARS IN
संबंधित प्रश्न
Define the unit of current.
The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?
Name two effects produced by electric current.
A bulb marked 12 V, 24 W operates on a 12 volt car battery for 20 minutes. Calculate:
(i) The current flowing through it, and
(ii) The energy liberated.
Find the effective resistance in the following circuit diagrams (Fig.):
How should the electric lamps in a building be connected?
What are the effects of electric current?
