Hello!
We can use the following equation for calculating power dissipated by a resistor:

P = Power (? W)
i = Current through resistor (2.0 A)
R = Resistance of resistor (50Ω)
Plug in the known values and solve.

Answer:
Extraneous
Explanation:
Extraneous variables are any variables that you are not intentionally studying in your experiment or test
Resistor. The answer is a resistor. They do not transmit electricity.
Answer:
A scientific hypothesis must be tetable so it can become a scientific theory.
Explanation: I think