Your friend says that according to Ohm’s law, high voltage produces high current. Then your friend asks, ""So how can power be transmitted at high voltage and low current in a power line?"" What is your illuminating response?

Explanation:

According to Ohm's law the current is directly proportional to the voltage between two points and inversely proportional to the resistance.

Mathematically:

where:

current

voltage

resistance

here resistance is a constant and cannot be changed, so:

hence for this ratio to be constant the values of voltage and current adjust accordingly.

We have the expression for the power as:

for a particular energy source the energy remains conserved.

so, on increasing Voltage the current will reduce to compensate the energy conservation.