Final answer:
When two parallel wires connected in series to a battery, they come closer due to a magnetic attraction resulting from the current flowing through them. Applying Ohm's law to a series circuit example with resistors, a 2.00 Amp current through a 10.00 Ohm resistor indicates a voltage of 20.00 Volts provided by the battery.
Step-by-step explanation:
The question concerns the physical phenomenon that occurs when two long parallel wires, hanging freely, are connected in series to a battery. It's important to understand that when current flows through these wires, a magnetic field is generated around them. According to the right-hand rule, the direction of this magnetic field is such that if the currents in the wires are in the same direction, the magnetic fields will interact in a way that draws the wires together. This happens due to the attractive magnetic force between the wires, thus the assertion (A) is true.
From the examples you provided, considering a circuit with resistors and a battery, it may not explicitly explain the phenomenon of wires connected in series coming closer due to magnetic interaction. However, one key concept that both scenarios share is the flow of current through conductors and the consequences thereof - whether it's magnetic interactions or voltage drops across resistors in series and parallel circuits.
Applying Ohm's law, which states that V = IR (voltage equals current times resistance), to your example of a series circuit with a current of 2.00 Amps running through a resistor with resistance of 10.00 Ohms, the voltage supplied by the voltage source would be 20.00 Volts.