Simulate 2 transistors in 2 different circuits.
One circuit with a 9volt battery, a 200 ohms resistor, a 1k ohms resistor, a transistor and a LED.
The second circuit with a 9volt battery, a 200 ohms resistor, a 2M ohms resistor, a transistor and a LED.
Both should be identically wired. One of them should work the other should not, due to the activation properties of the transistor.
A transistor must have 0.7 volts at the base to be active.
