A circuit has a 9V battery and 3Ω resistor. What is the current? (Ohm's Law: V = IR)
Answer
3 amperes
How to solve it
1
Voltage: 9V
2
Resistance: 3Ω
3
Current: I = V/R = 9 ÷ 3 = 3 amperes
Hints
Use Ohm's Law: V = IR
Solve for I: I = V ÷ R