Home
Class 12
PHYSICS
A wire of length L and 3 identical cells...

A wire of length L and 3 identical cells of negligible internal resistance are connected in series. Due to the current, the temperature of the wire is raised by `DeltaT` in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross-section but of length 2L. The temperature of the wire is raised by the same amount `DeltaT` in the same time t. the value of N is

A

4

B

6

C

8

D

9

Text Solution

AI Generated Solution

To solve the problem, we need to analyze the heat generated in the wire due to the current flowing through it, and how it relates to the number of cells and the length of the wire. ### Step-by-Step Solution: 1. **Identify the Variables**: - Let \( V \) be the potential difference of each cell. - Let \( R \) be the resistance of the wire of length \( L \). - The number of cells in the first case is 3, so the total potential difference is \( 3V \). ...
Promotional Banner

Topper's Solved these Questions

  • DC CIRCUIT

    VMC MODULES ENGLISH|Exercise LEVEL-2 DAILY TUTORIAL SHEET-3|10 Videos

  • DC CIRCUIT

    VMC MODULES ENGLISH|Exercise LEVEL-2 DAILY TUTORIAL SHEET-4|10 Videos

  • DC CIRCUIT

    VMC MODULES ENGLISH|Exercise LEVEL-2 DAILY TUTORIAL SHEET-1|10 Videos

  • CURRENT ELECTRICITY

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-F|10 Videos

  • DYNAMICS OF A PARTICLE

    VMC MODULES ENGLISH|Exercise JEE Advance (Archive) Level - II (SINGLE OPTION CORRECT TYPE )|31 Videos

Similar Questions

Explore conceptually related problems

A wire of length L and 3 identical cells of negligible internal resistances are connected in series. Due to the current, the temperature of the wire is raised by ΔT in a time t. A number N of similar cells is now connected in series with a wire of the same material and cross-section but the length 2 L. The temperature of the wire is raised by the same amount ΔT in the same t. The value of N is

Two wires of the same materical having equal area of cross-section have L and 2L. Their respective resistances are in the ratio

A current i passes through a wire of length l , radius of cross-section r and resistivity rho . The rate of heat generation is

When 6 identical cells of no internal resistance are connected in series in the secondarycircuit of a potentio meter, the balancing lengths is .l., balancing length becomes 1/3 when some cells are connected wrongly, the number of cells connected wrongly are

A wire of length L and cross-sectional area A is made of a material of Young's modulus Y. IF the wire is stretched by an amount x, the workdone is

A wire of length 100 cm is connected to a cell of emf 2 V and negligible internal resistance. The resistance of the wire is 3 Omega . The additional resistance required to produce a potential drop of 1 milli volt per cm is

Will current flow more easily through a thick wire or a thin wire of the same material when connected to the same source ? Why ?

Will current flow more easily through a thick wire or a thin wire of the same material when connected to the same source ? Why ?

In the given circuit diagram , a connecting wire of negligible resistance is joining the points B and D, the current in the connecting wire is

A circuit consists of a resistance R connected to n similar cells. If the current in the circuit is the same whether the cells are connected in series or in parallel, then the internal resistancer of each cell is given by