What will happen when the input voltages applied to the op amp is higher than its supplied voltage? Will it damage the op amp?
This will usually damage the op amp. Use either or both a decoupuling capacitor and a resister voltage divider. Also, there are isolation op amps available. SeeWhat will happen when the input voltages applied to the op amp is higher than its supplied voltage? Will it damage the op amp?
With a high series input resistor there would be no problem.
Doesn't this divide the input with the amp input resistance, thereby reducing the actual voltage at the input pin?
I misunderstood your original question. I have had to use an opamp where the input voltage was higher than the supply voltage and I did that by limiting current to the input. Limiting the current does of course also limit the voltage to that pin. Opamps generally are flexible enough that the limited input voltage can be compensated for by the gain.
input voltages applied to the op amp