Question

A simple circuit consists of a battery, an ammeter and a 2-ohm resistor. If the ammeter reads 4 amperes, determine the voltage of the battery and enter in the appropriate space.

Answer 1

• Resistance=2ohm
• Current=I=4A
• Voltage=V

Using ohms law

`\boxed{\sf (V)/(I)=R}`

`\\ \sf\longmapsto V=IR`

`\\ \sf\longmapsto V=2(4)`

`\\ \sf\longmapsto V=8V`