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

$\boxed{\sf \dfrac{V}{I}=R}$

$\\ \sf\longmapsto V=IR$

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

$\\ \sf\longmapsto V=8V$