English
Maharashtra State BoardSSC (English Medium) 10th Standard

Write Any Two Characteristics of a Series Combination of Resistors. - Science and Technology 1

Advertisements
Advertisements

Question

Write any two characteristics of a series combination of resistors.

Advertisements

Solution

Characteristics of series combination of resistors:-

  1. The same current flows through each resistor.
  2. The voltage (potential difference) across the combination is equal to the sum of the voltage drops across the individual resistors.
  3. The effective resistance of the combination is equal to the sum of the individual resistances.
  4. The effective resistance of the combination is greater than any of the individual resistances.
  5. The voltage across each resistor is directly proportional to the resistance of the resistor.
  6. The series combination can be used to increase the resistance in a circuit.
shaalaa.com
  Is there an error in this question or solution?
2012-2013 (March)

APPEARS IN

RELATED QUESTIONS

In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables


Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).


Complete the following :-

(a)


Why is the series arrangement not used for domestic circuits?


(i) Two sets A and B, of three bulbs each, are glowing in two separate rooms. When one of the bulbs in set A is fused, the other two bulbs also cease to glow. But in set B, when one bulb fuses, the other two bulbs continue to glow. Explain why this phenomenon occurs.

(ii) Why do we prefer arrangements of Set B for house circuiting?


An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:

(a) 0.92 A
(b) 2.9 A
(c) 9.2 A
(d) 92 A

 


How does the presence of impurities in a metal affect its resistance?


Write down an expression for the resistance of a metallic wire in terms of the resistivity.


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


When do you say that the resistors are connected in this way? Draw a circuit diagram.


Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the 40 W bulb will be ______.


Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.


State expression for Resistance connected in parallel.


Calculate the equivalent resistance between P and Q from the following diagram:


Four resistances of 2.0Ω each are joined end to end, to form a square ABCD. Calculate the equivalent resistance of the combination between any two adjacent comers.


2Ω resistor A, 1Ω resistor B and 4Ω resistor C are connected in parallel. The combination is connected across a 2V battery of negligible resistance. Draw the diagram of the arrangement and calculate:
(i) The current in each resistor A and C,
(ii) The current through battery.


Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell. Calculate the current in each resistor.


The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.


Two wires of the same length and area made of two materials of resistivity ρ1 and ρ2 are connected in series to a source of potential V. The equivalent resistivity for the same area is:


Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of 4 Ω.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×