Advertisements
Advertisements
प्रश्न
Find the effective resistance in the following circuit diagrams (Fig.):
Advertisements
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
How many microamperes are there in 1 ampere?
If the charge on an electron is 1.6 × 10−19 coulombs, how many electrons should pass through a conductor in 1 second to constitute 1 ampere current?
How many electrons are flowing per second past a point in a circuit in which there is a current of 5 amp?
Consider the circuit given below:
(a) In which circuit are the lamps dimmest?
(b) In which circuit or circuits are the lamps of equal brightness to the lamps in circuit (i)?
(c) Which circuit gives out the maximum light?
Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply of the energy supplied in kWh to the three heaters in 5 hours.
In current electricity, a positive charge refers to ______.
Electric current passes through a metallic conductor due to the movement of ______.
