**A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be if another resistor (with a resistance of 7.5 ohms) is added to the circuit?**A.increase; 0.51 amps

B.increase; 0.72 amps

C.increase; 3.6 amps

D.decrease; 0.51 amps

E.decrease; 0.72 amps

The formula for solving current given with resistance and power source or voltage is shown below:

I = V/R

When two 5 ohms resistors are in series, we have:

I = 9 volts / (5+5 ohms)

I = 0.9 amperes

When it is being added with another 7.5 resistors, we have:

I = 9 volts / (5+5+7.5 ohms)

I = 0.529 ampere

The answer to the question is the letter "D. decrease; 0.51 amps".

Rate answer

If your question is not fully disclosed, then try using the search on the site and find other answers on the subject Chemistry.

Find another answersChemistry, published 24.05.2023

Chemistry, published 05.04.2023

Chemistry, published 24.04.2023