Home
Class 12
PHYSICS
When a celll is connected to an external...

When a celll is connected to an external resistance `R_(1)`, current through it is `i_(1)`. When the same cell is connected to an external resistance `R_(2)`, current through it is `i_(2)`. Calculate the emf and internal resisance of the cell.

Text Solution

AI Generated Solution

To solve the problem of finding the EMF and internal resistance of the cell when connected to two different external resistances, we can follow these steps: ### Step 1: Write the equations for current When the cell is connected to the external resistance \( R_1 \), the current \( i_1 \) can be expressed using Ohm's law: \[ i_1 = \frac{E}{r + R_1} \] Where: ...
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|34 Videos

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT(SECTION-A(OBJECTIVE TYPE QUESTIONS))|69 Videos

  • COMMUNICATION SYSTEMS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION D (Assertion-Reason)|10 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-D)|10 Videos

Similar Questions

Explore conceptually related problems

A group of identical cells (all in parallel) are connected to an external resistance R_(1) . Current through R_(1) is i_(1) . Another group of identical cells (all in series) are connected to some other resistance R_(2) . Current through R_(2) is i_(2) . Now one cell is removed from both the groups. Then

A cell supplies a current i_(1) trhough a resistnace R_(1) and a current i_(2) through a resistance R_(2) . The internal resistance of this cell is

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be

A cell has an emf 1.5V. When connected across an external resistance of 2Omega , the terminal potential difference falls to 1.0V. The internal resistance of the cell is:

When 10 identical cells in sereis are connected to the ends of a resistance of 59Omega , the current is found to be 0.25A. But when the nsame cells, being connected in parallel, are joined to the ends of a resistance of 0.05Omega, the current is 25A. Calculate the internal resistance and the emf of each cell.

A cell supplies a current of 2 A when it is connected to a 5 Omega resistance and supplies a current of 1.2 A, if it is connected to a resistance of 9 Omega . Find the e.m.f and internal resistance of the cell.

A cell sends a current through a resistance R_(1) for time t , next the same cell sends current through another resistance R_(2) for the time t If the same amount of heat is developed in both the resistance then find the internal resistance of the cell

N identical cells whether joined together in series or in parallel, give the same current, when connected to an external resistance of 'R'. The internal resistance of each cell is:-

n identical cells each of e.m.f. E and internal resistance r are connected in series. An external resistance R is connected in series to this combination. The current through R is

When two identical cells are connected either in series or in parallel across a 4 ohm resistor, they send the same current through it. The internal resistance of the cell in ohm is