Advertisements
Advertisements
प्रश्न
If the equivalent resistance is to be increased, then the number of resistances should be connected in
- Series
- Parallel
- Mixed arrangement
- None of the above
Advertisements
उत्तर
(a) Series.
The effective resistance in series is the sum of individual resistances. So, the resistances should be connected in series in order to increase the effective
resistance.
APPEARS IN
संबंधित प्रश्न
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
The V-I graph for a series combination and for a parallel combination of two resistors is shown in the figure below. Which of the two A or B. represents the parallel combination? Give reasons for your answer.
Name the material which is the best conductor of electricity.
Give one example to show how the resistance depends on the nature of material of the conductor.
Calculate the combined resistance in the given case:
A p.d. of 4 V is applied to two resistors of 6 Ω and 2 Ω connected in series. Calculate:
(a) the combined resistance
(b) the current flowing
(c) the p.d. across the 6 Ω resistor
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
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
State how are the two resistors joined with a battery when same current flows in each resistor.
Name the following substance showing low resistivity.
What potential difference is needed to drive a current o f 1 A through a 5 Ω resistor?
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`?
How does the resistivity of a semiconductor depend on temperature?
State expression for Resistance connected in series.
Six resistances are connected together as shown in the figure. Calculate the equivalent resistance between points A and B.
In the circuit shown below, calculate the equivalent resistance between the points (i) A and B, (ii) C and D.
What is the equivalent resistance between the points X and Y for the given network?
The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.
