how will you infer with the help of an experiment that the same current flow through every part of the circuit containing three resistor R1 R2 and r3 in series connected to a battery of v volts
Hello candidate,
When the resistors are connected in series connection, all the resistors are connected in one single chain with no branching in any of the connections.
The equivalent resistance of the circuit is given by the arithmetic sum of individual resistances and the total current of the circuit is given by a voltage source divided by the total resistance. Hence, equal current is distributed among all resistors.
Hope it helps!!