Advertisements
Advertisements
प्रश्न
Write any two characteristics of a series combination of resistors.
Advertisements
उत्तर
Characteristics of series combination of resistors:-
- The same current flows through each resistor.
- The voltage (potential difference) across the combination is equal to the sum of the voltage drops across the individual resistors.
- The effective resistance of the combination is equal to the sum of the individual resistances.
- The effective resistance of the combination is greater than any of the individual resistances.
- The voltage across each resistor is directly proportional to the resistance of the resistor.
- The series combination can be used to increase the resistance in a circuit.
APPEARS IN
संबंधित प्रश्न
Complete the following :-
(a)

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?
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
When a 4 Ω resistor is connected across the terminals of a 12 V battery, the number of coulombs passing through the resistor per second is:
(a) 0.3
(b) 3
(c) 4
(d) 12
How does the presence of impurities in a metal affect its resistance?
Calculate the resistance of an aluminium cable of length 10 km and diameter 2.0 mm if the resistivity of aluminium is 27 × 10−8 Ωm.
If five resistances, each of value 0.2 ohm, are connected in series, what will be the resultant resistance?
Calculate the combined resistance in the given case:
![]()
If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is :
(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω
What is the resistance between A and B in the figure given below?
What is the equivalent resistance between A and B in the given circuit (Fig?)

How will you oonnect five resistors, each of the value one ohm, to obtain an equivalent resistance of 0.2 `Omega`
Calculate the equivalent resistance of the following combination of resistor r1, r2, r3, and r4

To increase the effective resistance in a circuit, the resistors are connected in _______________ .
Choose the correct alternative and rewrite the following sentence.
If three resistors 2 ohms, 3 ohms and 4 ohms are connected in series, then the effective resistance in the circuit will be _______ ohms.
Choose the correct alternative and rewrite the following:
You are given three equal resistances. In how many combinations can they are arranged?
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 quantity of heat that will be produced in a coil of resistance 75 Ω if a current of 2A is passed through it for 2 minutes.
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:
