Consider the following statements. Which of them is/are true?
1
The resistance of the memristor will increase when the electrical current flows through in one direction and decreases when it flows in the other direction.
2
Its value of resistance lies in the magnitude of applied voltage and polarity.
3
Whenever the applied voltage is turned off, the resistance value of the memristor is cleared.
4
A memristor is a non-linear passive device.