Question

according to ohms law, which combination of units is the same as the unit for voltage?
ohm + ampere
ampere × ohm
ohm + ampere
ampere + ohm

Explanation:

Step1: Recall Ohm's law

Ohm's law is \(V = IR\), where \(V\) is voltage, \(I\) is current (unit: ampere, \(A\)), and \(R\) is resistance (unit: ohm, \(\Omega\)).

Step2: Analyze the units

Substitute the units into the formula. The unit of \(V\) is \(A\times\Omega\) (since \(V = IR\), unit - wise \(V\) unit \(=\) (current unit) \(\times\) (resistance unit)).

Answer:

ampere \(\times\) ohm