Question

Ohm's law says that when electric current is flowing across a resistor, then the voltage v, measured in volts, is the product of the current i, measured in amperes, and the resistance R, measured inohms. That is, VIR(a) What is the voltage if the current is 26 amperes and the resistance is 17 ohms?v=____volts(b) Find a formula expressing resistance as a function of current and voltage. Use your function to find the resistance if the current is 12 amperes and the voltage is 6 volts. (Round youranswer to one decimal place.)r=______ohms(c) Find a formula expressing current as a function of voltage and resistance. Use your function to find the current if the voltage is 6 volts and the resistance is 8 ohms. (Round your answer totwo decimal places.)I=______ampere

Answer 1

we have that

V=IR

part a)

we have

I=26 A

R=17 ohms

substitute in the formula

V=26(17)

V=442 volts

Part b

We have

V=IR

solve for R

divide both sides by I

R=V/I

so

we have

I=12 ampere

V=6 v

substitute

R=6/12

R=0.5 ohms

Part c)

we have V=IR

solve for I

divide both sides by R

I=V/R

we have

V=6 v

R=8 ohms

substitute

I=6/8

I=0.75 ampere