Question

obtain expression for effective ressistence of three resistors R1,R2,AND R3 are conected in series to 6v battery through voltmeter and ammeter

Answer 1

Step-by-step explanation:

If they are in a series circuit they just add together

Rtotal = R1 + R2 + R3

there is some small resistance in the ammeter and the battery too (these would add to the total ) if you want to be totally correct.