हिंदी

Find the Equivalent Resistance Between a and B - Physics

Advertisements
Advertisements

प्रश्न

Find the equivalent resistance between A and B

Advertisements

उत्तर

6Ω and 3Ω are in parallel

`:.1/R_p= 1/R_1 + 1/R_2`

`:.R_(P_1) = 6.3/(6+3) = 18/9` = 2 Ω

4Ω and 2Ω are in parallel

`:. 1/R_P = 1/R_1 + 1/R_2`

`:. R_(P_2) = 4.12/(4+12) = 4.12/16 = 3 Ω`

`:. "Total"  R_T = R_(P_1)  + R_(P_2) = 2 + 3 = 5 Ω`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2017-2018 (March) Set A

संबंधित प्रश्न

If the equivalent resistance is to be increased, then the number of resistances should be connected in

  1. Series
  2. Parallel
  3. Mixed arrangement
  4. None of the above

A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 12 Ω, respectively. How much current would flow through the 12 Ω resistor?


 Give one example to show how the resistance depends on the nature of material of the conductor.


The diagram below shows part of a circuit: 

 

If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:
 
(a) 9 Ω
(b) 4 Ω
(c) 6 Ω
(d) 18 Ω


What do you mean by an equivalent resistance?

What do you mean by a rheostat?

Answer the following question.
While studying the dependence of potential difference ( V) across a resistor on the current (I) passing through it, in order to determine the resistance of the resistor, a student took 5 readings for different values of current and plotted a graph between V and t. He got a straight line graph passing through the origin. What does the straight-line signify? Write the method of determining the resistance of the resister using this graph. 


Calculate the equivalent resistance between the points A and B for the following combination of resistors:


If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then:


Two electric bulbs have resistances in the ratio 1 : 2. If they are joined in series, the energy consumed in them is in the ratio:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×