Current and Resistance
Key Questions

Answer:
#V = I * R# or other forms...Explanation:
Ohm's law describes the relationship between voltage, current and resistance.
It can be expressed in the form:
#V = I * R# where#V# is the voltage (measured in volts),#I# the current (measured in amperes) and#R# the resistance (measured in ohms).This is also expressible in the VIR triangle:
which can be read as:
#V = I * R# #I = V / R# #R = V / I# 
A thicker wire (of the same material) has lower resistance.
Having a thicker wire means that the volume of conducting material has increased so there are more conduction electrons available.
A concrete example of this point would be consider the current that flows through a wire. Now take a second identical wire and set it parallel with the first. The current that flows through the parallel combination would be larger (by a factor of two). Therefore the resistance of that arrangement must be less than the single wire (half the resistance of the single wire).