Advertisements
Advertisements
Question
Find the effective resistance in the following circuit diagrams (Fig.):
Advertisements
Solution
In the given network, between B and C the series combination
of two 6 Ω resistors is connected in parallel with the third 6Ω resistor.
`1/"R"_"equivalent" = 1/(6 +6) + 1/6 = 1/12 + 1/6 = 3/12 = 1/4`
`"R"_"equivalent" = 4 Omega`
Now, between P and Q, two 6 Ω resistors and 4Ω resistor are connected in series.
:. total resistance between P and Q is:
`"R"_"total"` = 6 + 6 + 4 = 16Ω
APPEARS IN
RELATED QUESTIONS
Why should the resistance of:
an ammeter be very small?
One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor?
What happens to the other bulbs in a parallel circuit if one bulb blows off?
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.
- Which circuit would have the highest voltage across each bulb?
- In which circuit would the bulbs be brighter?
- In which circuit, if one bulb blows out, all others will stop glowing?
- Which circuit would have less current in it?
Complete the following sentence:
Fuse wire has a ............ Melting point and it is made of an alloy of ......... and if the current in a circuit rises too high, the fuse wire ...........
Calculate the amount of energy transferred by a 10 A electric current flowing through a resistor of 5 o for 15 minutes.
A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
