Question

When you double the voltage across a certain material or device, you observe that the current increases by a factor of 3.

Answer 1

Step-by-step explanation:

The current which flows through the circuit is dependent on the resistance of the material/device. Given by the equation U=RI

If U becomes 2U

And I becomes 3 I

then R×2=3

R=3/2=1.5 Ω

Hope this answers your question?