Question

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same. What will Venus need to do?

A) Increase the voltage by adding a bigger battery


B) Decrease the voltage by adding a bigger battery


C) Keep the same exact setup as she originally made


D) It is impossible to change the resistance and keep the current the same.

Answer 1

A) Increase the voltage by adding a bigger battery

Step-by-step explanation:

According to Ohm's law

V = IR

where V is voltage, I is current and R is the resistance. If we write the equation for resistance we would get

R= V / I

Here we can see that Voltage is directly proportional to Resistance so in order to keep the balance if we increase the resistance then we must increase the voltage to keep the current constant.

Answer 2

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb.

Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.

In order to keep the same current flowing through a greater resistance, Venus will need to increase the voltage by changing to a battery with greater voltage. (A)