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Abhishekdas
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Current electricity...
In the circuit shown(please refer to attchment) only thing missing is that the battery has an internal resistance of r. Now When key K1 is closed the ammeter reads I0 whether K2 is open or closed. But when K1 is open the ammter reads I0 /2 when K2 is closed. Assuming that ammeter resistance is much less than R2 find R1 and r.
Here R2=100 ohm and R3 = 100 ohm
Now in the diagram no Ammeter is visible ...So i proceeded assuming that ammeter is attached to the main circuit ie anywhere near the battery...Now i don't get this "When key K1 is closed the ammeter reads I0 whether K2 is open or closed"...how can this I0 be independent of R3?
Homework Statement
In the circuit shown(please refer to attchment) only thing missing is that the battery has an internal resistance of r. Now When key K1 is closed the ammeter reads I0 whether K2 is open or closed. But when K1 is open the ammter reads I0 /2 when K2 is closed. Assuming that ammeter resistance is much less than R2 find R1 and r.
Here R2=100 ohm and R3 = 100 ohm
Homework Equations
The Attempt at a Solution
Now in the diagram no Ammeter is visible ...So i proceeded assuming that ammeter is attached to the main circuit ie anywhere near the battery...Now i don't get this "When key K1 is closed the ammeter reads I0 whether K2 is open or closed"...how can this I0 be independent of R3?
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