Two resistors r1=100 ohm and r2=220 ohm are connected in series across a voltage of 6.4v calculate the resistance of the resistor equivalent to r1 and r2

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

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explanation: