हिंदी

You Have Three Resistors of Values 2ω, 3ω and 5ω. How Will You Join Them So that the Total Resistance is More than 7ω?

Advertisements
Advertisements

प्रश्न

You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is more than 7Ω?

1) Draw a diagram for the arrangement

2) Calculate the equivalent resistance.

 

Advertisements

उत्तर

To get total resistance more than 7Ω. We can connect 2Ω,3Ω and 5Ω in series.

1)

2) 

`R_"equivalent"` = 2 + 3 + 5 = 10Ω

 

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

संबंधित प्रश्न

 What do the letters p.d. stand for?


The unit for measuring potential difference is ______.


A current of 1.6 mA flows through a conductor. If charge on an electron is –1.6 × 10-19 coulomb, find the number of electrons that will pass each second through the cross section of that conductor.


Write an expression for the electrical power spent in flow of current through a conductor in terms of current and resistance.


Point out two differences between e.m.f. and potential difference as applied to electric circuits.


From the following observations taken while determining the resistance of a conductor, draw the current-voltage graph and calculate the resistance of conductor. Is the conductor ohmic?

Ammeter reading I (in ampere) Voltmeter reading V (in volt)
0.2 0.4
0.3 0.6
0.5 1.0
0.8 1.6
1.5 3.0

In the figure given below, A, B and C are three ammeters. The ammeter B reads 0.5A. (All the ammeters have negligible resistance.)

Calculate:
(i) the readings in the ammeters A and C.
(ii) the total resistance of the circuit.


A cell of e.m.f 2.0 V and internal resistance 1Ω is connected to the resistors of 3Ω and 6Ω in series. Calculate:
(i) the current drawn from the cell,
(ii) the p.d. across each resistor,
(iii) the terminal voltage of the cell and
(iv) the voltage drop.


What is the measure of the work done on the unit positive charge to bring it to that point against all electrical forces?


Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×