I WILL MARK YOU BRAINLIEST Why does halving the voltage in a power supply not always halve the current?
13ssuri:
Everyone has given me exactly the same wording, but it is not relevant to my question - I am asking that if you halved the voltage in a circuit, why doesn’t the current always halve?
Answers
Answered by
4
Current is not fixed, its dependent on the resistance which is fixed in this question. So a simple reason is that is the voltage is halved the current is also halved (By ohm’s law).
The power is the product of Voltage times current.
If both are halved then the power after that is only 1/4 of the power.
If the voltage was doubled then the power would be quadrupled.
This “squared” relation between power, voltage and resistance is easily derived.
Given Ohm’s law V=I * R which also means I = V/R
and P = I * V
the P = V * V / R = V^2/R
Hope it Helps.
The power is the product of Voltage times current.
If both are halved then the power after that is only 1/4 of the power.
If the voltage was doubled then the power would be quadrupled.
This “squared” relation between power, voltage and resistance is easily derived.
Given Ohm’s law V=I * R which also means I = V/R
and P = I * V
the P = V * V / R = V^2/R
Hope it Helps.
Answered by
2
Hey!Ur answer is:- The simple reason is that is the voltage is halved the current is also halved (By Ohm's law). The power is the product of Voltage times current. If both are halved then the power after that is only 1/4 of the power. If the voltage was doubled then the power would be quadrupled.
pls mark as brainlist
Similar questions