Voltage Formulas

Question 1

V = Volts = Electromotive force
State the formula used to find voltage…
When amperage and resistance are known.
V =

Answer 1

V = I • R

Question 2

V = Volts = Electromotive force
State the formula used to find voltage…
When power and amperage are known.
V =

Answer 2

V = P / I

Question 3

V = Volts = Electromotive force
State the formula used to find voltage…
When power and resistance are known.
V =

Answer 3

V = ✓ [P • R]