Question

What happens if you double the number of batteries used in a circuit? (Assume all of the batteries are the same.)

Answer 1

I think it is E. The voltage and current doubles. 

Answer 2

Answer;

E.The voltage and current doubles.

Explanation;

• From the Ohm's law, current through a conductor is directly proportional to the potential difference at constant temperature and pressure.
• Mathematically; I =V/R, where R is the resistance, I is the current and V is the voltage or the potential difference.
• Current is directly proportional to the voltage, thus and increase in voltage  causes an increases in the amount of current in a circuit and vice versa.
• Thus, if you double the number of batteries used in a circuit the both the current and voltage doubles.