1.what is the resistance of the resistor in the circuit.

Answer:
The electrical resistance of a resistor is measured in ohms. The symbol for an ohm is the greek capital-omega. The (somewhat roundabout) definition is the resistance between two points where 1 volt of applied potential energy will push 1 ampere of current.
Step-by-step explanation:
it's the electrical resistance of a resistor is measured in ohms.
that is all I understand