Question:
10 resistors, each of resistance R are connected in series to a battery of emf E and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased n times. The value of n is:
10 resistors, each of resistance R are connected in series to a battery of emf E and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased n times. The value of n is:
Updated On: Apr 3, 2025
100
1
1000
10
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
\(I_s=\frac{E}{10R}\) ……….(1)
\(I_p=\frac{E}{\frac{R}{10}}=\frac{10E}{R}\) ……..(2)
According to eq. (1) and (2)
\(n=\frac{I_p}{I_s}=100\)
\(\Rightarrow n=100\)
So, the correct answer is option (A): 100
Was this answer helpful?
15
23
Top Questions on Combination of Resistors — Series and Parallel
- A wire of resistance 20 \(\Omega\) is divided into 10 equal parts. A combination of two parts are connected in parallel and so on. Now resulting pairs of parallel combination are connected in series. The equivalent resistance of final combination is _______ \(\Omega\).
- JEE Main - 2024
- Physics
- Combination of Resistors — Series and Parallel
- Two resistors 2 Ω and 4 Ω are combined in parallel. If this combination is connected to a battery of 16 𝑉, the maximum current that can be drawn from the battery is ________ 𝐴 (rounded off to the nearest integer).
- IIT JAM BT - 2024
- Physics
- Combination of Resistors — Series and Parallel
- Value of R such that the circuit, shown below, is resonant
- CUET (PG) - 2023
- Physics
- Combination of Resistors — Series and Parallel
- In series connection of resistors, if one of the resistors breaks down, then
- TS POLYCET - 2022
- Physics
- Combination of Resistors — Series and Parallel
- Find Rnet between A and B
- JIPMER MBBS - 2018
- Physics
- Combination of Resistors — Series and Parallel
View More Questions
Questions Asked in CUET exam
- If 75$\%$ of a first-order reaction gets completed in 32 minutes, the time taken for 50$\%$ completion of this reaction is:
- CUET (UG) - 2024
- Order of reaction
- From the given options, which pass connects Jammu with Srinagar?
- CUET (UG) - 2024
- Static GK
- The corner points of the feasible region determined by $x + y \leq 8$, $2x + y \geq 8$, $x \geq 0$, $y \geq 0$ are $A(0, 8)$, $B(4, 0)$, and $C(8, 0)$. If the objective function $Z = ax + by$ has its maximum value on the line segment $AB$, then the relation between $a$ and $b$ is:
- CUET (UG) - 2024
- Linear Programmig Problem
- Match the words in List-I with their definitions in List-II :
List-I (Words) List-II (Definitions) (A) Theocracy (I) One who keeps drugs for sale and puts up prescriptions (B) Megalomania (II) One who collects and studies objects or artistic works from the distant past (C) Apothecary (III) A government by divine guidance or religious leaders (D) Antiquarian (IV) A morbid delusion of one’s power, importance or godliness Choose the correct answer from the options given below :- CUET (UG) - 2024
- Vocabulary
- Complete the sentences given in List-I with the appropriate prepositions given in List-II:
View More Questions
Concepts Used:
Resistance
Resistance is the measure of opposition applied by any object to the flow of electric current. A resistor is an electronic constituent that is used in the circuit with the purpose of offering that specific amount of resistance.
R=V/I
In this case,
v = Voltage across its ends
I = Current flowing through it
All materials resist current flow to some degree. They fall into one of two broad categories:
- Conductors: Materials that offer very little resistance where electrons can move easily. Examples: silver, copper, gold and aluminum.
- Insulators: Materials that present high resistance and restrict the flow of electrons. Examples: Rubber, paper, glass, wood and plastic.
Resistance measurements are normally taken to indicate the condition of a component or a circuit.
- The higher the resistance, the lower the current flow. If abnormally high, one possible cause (among many) could be damaged conductors due to burning or corrosion. All conductors give off some degree of heat, so overheating is an issue often associated with resistance.
- The lower the resistance, the higher the current flow. Possible causes: insulators damaged by moisture or overheating.