Question

the formula I=square root w/r gives the electric current I amperes that flows through an appliance, where W is the power in watts and R is the resistance in ohms. which set of numbers best describes the value of I for the given values of W and R? ( 42.) W=100,R=25 ( 43.)W=100,R=50

Answer 1

I believe the correct form of the given equation is:

 

I = square root (W / R)                   ---> where both W and R is inside the square root symbol

 

where,

I = the current

W = the electric power

R = resistance in ohms

 

Now to solve for the value of I for each set, simply substitute the values of W and R into the equation, that is:

 

when W=100,R=25

I = square root (100 / 25)
I = square root (4)

I = 2

 

when W=100,R=50

I = square root (100 / 50)
I = square root (2)

I = 1.414