Question

When 2.0 A of current moves across a 1.0 MΩ resistor, then what is the drop in voltage (V) across the resistor?

Answer 1

$$V=iR$$

Answer 2

so it would be 2, right?

Answer 3

You have to be more precise. What is the unit of voltage in SI units?

Answer 4

what about the practical source ,draws 2A for 1M ohm

Answer 5

If you have 1MΩ (Mega ohm), you have
\[1.10^{6}Ω\]
Then,

2A . 1MΩ = \[2.10^{6}V\]

Answer 6

apply V=iR (ohm's law)
=> 2A x1MΩ
= 2 MV is the answer