Ohm's Law and Power

Question 1

symbol for voltage

Answer 1

• measure unit (abbreviation): V
• Ohm’s Law symbol: E

Question 2

symbol for current

Answer 2

I

Question 3

symbol for resistor

Answer 3

R or Ω

Question 4

Ohm’s Law equation

Answer 4

V = I x R

Question 5

current equation

Answer 5

I = V/R

Question 6

resistor equation

Answer 6

R = V/I

Question 7

V= 12V and R = 10Ω, what’s the current (I)?

Answer 7

I = 12V/10Ω = 1.2A

Question 8

symbol for power

Answer 8

P

Question 9

(non-fraction) power equation

Answer 9

P = V x I = V x E

Question 10

E = 12V, I = 1.2A, what’s the resistance?

Answer 10

resistance (R) = 12V / 1.2A = 10 Ω

Question 11

(fraction) power equation

Answer 11

p = V² / R = I² x R

Question 12

What does the E symbol of voltage stand for?

Answer 12

electromotive force, another name of voltage