A student connects the battery to a lightbulb, using wires, creating a close simple circuit. The student connect an amateur to the circuit and places a Compass next to the wires. The student Dan decides to connect a second battery to the circuit. Which statement describes the changes that will occur after? Can I see the second battery?
When the student connects the second battery to the circuit, the current flowing through the wires will increase. This is because the second battery will increase the voltage in the circuit, which in turn will increase the current.
As for whether or not you can see the second battery, it depends on how the circuit and the batteries are connected. If the batteries are connected in parallel, meaning the positive terminals are connected together and the negative terminals are connected together, then you would not be able to physically distinguish between the two batteries. However, if the batteries are connected in series, meaning the positive terminal of the first battery is connected to the negative terminal of the second battery, then you would be able to see both of them.