Practice question · Fill in the blanks
Complete Ohm's law rearranged for the current.
For a component of resistance R across a voltage V, the current is ______.
Word bank: V times R · V divided by R · R divided by V · V plus R
Hints
- Start from voltage equals current times resistance and divide both sides.
- The answer must get smaller as the resistance grows.
Show the answer
For a component of resistance R across a voltage V, the current is V divided by R.
Why
Dividing V equals I times R by R isolates the current as V over R. Checking the behaviour at the extremes settles it: an enormous resistance should give almost no current, which only the division delivers.
Practise Electric Circuits
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