Advertisements
Advertisements
प्रश्न
Find the effective resistance in the following circuit diagrams (Fig.):
Advertisements
उत्तर
In the given network, the parallel combination of two 2 Ω resistors is
connected in series with the parallel combination of two 3 Ω resistors.
:. Resistance in parallel of two 2Ω resistors is:
`1/"R"_"P" = 1/2 + 1/2 = 2/2 = 1`
Rp = 1Ω
Resistance in parallel of two 3Ω resistors is:
`1/"R"_"P" = 1/3 + 1/3 = 2/3`
`"R"_"P"' = 3/2 Ω`
Total resistance of the network
`"R"_"total" = 1 + 3/2 = 5/2 Ω`
APPEARS IN
संबंधित प्रश्न
The SI unit of charge is volt.
Fill in the blank:
To increase the effective resistance in a circuit the resistors are connected in _____________.
Why should the resistance of:
a voltmeter be very large?
If the current through a floodlamp is 5 A, what charge passed in 10 seconds?
(a) 0.5 C
(b) 2 C
(c) 5 C
(d) 50 C
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(b) In which circuit, if one bulbs be brighter?
State three factors on which the heat produced by an electric current depends. How does it depend on these factors?
A wire of uniform thickness with a resistance of 27Ω is cut into three equal pieces and they are joined in parallel. Find the equivalent resistance of the parallel combination.
Complete the following sentence:
A fuse is a short piece of wire of high ......... and low
A bulb marked 12 V, 24 W operates on a 12 V battery for 20 minutes. Calculate:
- The current flowing through it, and
- The energy consumed.
