Answer:
A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects.
Explanation:
Current<span> is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. ... Physicists consider </span>current<span> to flow from relatively positive points to relatively negative points; this is called conventional </span>current<span> or Franklin </span>current. Electrons, the most common charge carriers, are negatively charged.
Voltage<span> is electric potential energy per unit charge, measured in joules per coulomb ( = volts). It is often referred to as "electric potential", which then must be distinguished from electric potential energy by noting that the "potential" is a "per-unit-charge" quantity.</span>
The electrical resistance<span> of a circuit component or device is defined as the ratio of the voltage applied to the electric current whichflows through it: If the </span>resistance<span> is constant over a considerable range of voltage, then Ohm's law, I = V/R, can be used to predict the behavior of the material.b
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Depends on how heavy ur car is, u could use a high powered fan to move the can or u could use the motor and wheels from a remote control car
A scientific law is absolute, it cannot be proven wrong. A scientific theory is like a belief, it has been proven but can also be argued or disproven.
The currents in the wires are in opposite directions.
- Two long parallel wires separated by a distance 'r' having current
and 
have force per unit length which is given by 
.....(1) where 
is permittivity of free space whose value is 
.
If the current flowing through the wire are in same direction then they the wire attract each other and if the current flowing through the wire are opposite in direction then they the wire repel each other .
As it is given that two wires repel each other which means that current in the wires are in opposite direction .
Hence current flowing through wires are opposite in direction.
Learn more about force per unit length here :
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