Basically the given explanation will make sense!
In fact, P = VI
In which,
P is the power in watt
V is the potential Difference in volt
I is the current in ampere
Now second Formula says that,
P = I2R = V2/R = V(V/R)
In this equation, Joule's law has combined with Ohm's law and the value of I has put in it because I = V/R. In the first equation, I and V are product and equals to power while in the second equation just the value of I has been put.
Now in the first case when Voltage will increase I will go down and in the second case the value of resistance will increase and again make the ratio of V/R equal to I in the first equation and it will not make any difference.
In fact, P = VI
In which,
P is the power in watt
V is the potential Difference in volt
I is the current in ampere
Now second Formula says that,
P = I2R = V2/R = V(V/R)
In this equation, Joule's law has combined with Ohm's law and the value of I has put in it because I = V/R. In the first equation, I and V are product and equals to power while in the second equation just the value of I has been put.
Now in the first case when Voltage will increase I will go down and in the second case the value of resistance will increase and again make the ratio of V/R equal to I in the first equation and it will not make any difference.
