हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of (6/11) Ω?

Advertisements
Advertisements

प्रश्न

Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of  (6/11) Ω?

संख्यात्मक
Advertisements

उत्तर

Equivalent resistance, R' = `6/11` Ω

Consider the series combination of the resistors, as shown in the given circuit.

Equivalent resistance of the circuit is given by,

R' = `(1 xx 2 xx 3)/(1 xx 2 + 2 xx 3 + 1 xx 3)`

= `6/11` Ω

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Current Electricity - Exercise [पृष्ठ १२९]

APPEARS IN

एनसीईआरटी Physics Part I and II [English] Class 12
अध्याय 3 Current Electricity
Exercise | Q 3.20 (b) (iv) | पृष्ठ १२९

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Kirchhoff's junction law is equivalent to .............................
(a) conservation of energy.
(b) conservation of charge
(c) conservation of electric potential
(d) conservation of electric flux


Use Kirchhoff's rules to obtain conditions for the balance condition in a Wheatstone bridge.


Determine the current drawn from a 12 V supply with internal resistance 0.5 Ω by the infinite network shown in the figure. Each resistor has 1 Ω resistance.


Given the resistances of 1 Ω, 2 Ω, 3 Ω, how will be combine them to get an equivalent resistance of (11/3) Ω?


In the circuit shown in the figure below, E1 and E2 are two cells having emfs 2 V and 3 V respectively, and negligible internal resistance. Applying Kirchhoff’s laws of electrical networks, find the values of currents l1 and I2.


State Kirchhoff ’s voltage rule.


How the emf of two cells are compared using potentiometer?


In a potentiometer arrangement, a cell of emf 1.25 V gives a balance point at 35 cm length of the wire. If the cell is replaced by another cell and the balance point shifts to 63 cm, what is the emf of the second cell?


The instrument for the accurate measurement of the e.m.f of a cell is ______.


Assertion: Kirchhoff’s junction rule follows from conservation of charge.
Reason: Kirchhoff’s loop rule follows from conservation of momentum.


The Kirchhoff's second law (ΣiR = ΣE), where the symbols have their usual meanings, is based on ______.


The e.m.f of The battery in a thermocouple is doubled. The rate of heat generated at one of the junction will.


The figure below shows current in a part of electric circuit. The current I is ______.


Kirchhoff’s junction rule is a reflection of ______.

  1. conservation of current density vector.
  2. conservation of charge.
  3. the fact that the momentum with which a charged particle approaches a junction is unchanged (as a vector) as the charged particle leaves the junction.
  4. the fact that there is no accumulation of charges at a junction.

Why are alloys used for making standard resistance coils?


Derive the equation of the balanced state in a Wheatstone bridge using Kirchhoff’s laws.


A 6-volt battery is connected to the terminals of a three-metre-long wire of uniform thickness and resistance of 100 ohms. The difference of potential between two points on the wire separated by a distance of 50 cm will be ______.


The figure below shows two batteries, E1 and E2, having emfs of 18V and 10V and internal resistances of 1 Ω and 2 Ω, respectively. W1, W2 and W3 are uniform metallic wires AC, FD and BE having resistances of 8 Ω, 6 Ω and 10 Ω respectively. B and E are midpoints of the wires W1 and W2. Using Kirchhoff's laws of electrical circuits, calculate the current flowing in the wire W3:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×