Question

What is the current flowing through a wire of resistance $5\Omega$ connected to a battery of potential difference 3 V ?

• A. 1.6 A
• B. 15 A
• C. 0.6 A
• D. 3 A

Answer 1

Answer: (C)

0.6 A

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. Introducing the constant of proportionality, the resistance, one arrives at the usual mathematical equation that describes this relationship, I = V/R.
Hence, the current I flowing through the wire =$\frac{3V}{5\Omega }=0.6amperes$.