Rewriting Ohm's Law

​Ohm's Law

​Ohm's Law states that there is a direct relationship between current and voltage and an inverse relationship between current and resistance. This results in the equation below







Can we rewrite this equation for each individual variable?

Drag and Drop

V

I = -----

R

If we multiply both sides of the equation by ​

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we end up with ​

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= ​

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​

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Drag these tiles and drop them in the correct blank above

R

V

I

​Now we have the equation




where
Voltage = Current X Resistance


Make sure you have this written down, and try out the next problem...

Math Response

A lightbulb with 1.4 Ω of resistance requires 3.4 A of current in the circuit. How much Voltage does the battery need to have to light the bulb?

Type answer here

Correct Answer: 4.76

Deg^°

Rad

Let's take our equation






and try to solve for the last variable, R

Give it a try, then head to the next question

Drag and Drop

We can solve for ​

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by ​ dividing both sides of the equation by ​

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​

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This would give us the equation ​

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= ----------------

​

Placeholder

Drag these tiles and drop them in the correct blank above

resistance

current

voltage

Math Response

A 125-V battery is connected to a circuit with 3 A of current flowing through it. What must the resistance be in the circuit?

Type answer here

Correct Answer: \frac{125}{3}

Deg^°

Rad

We now have three equations that represent Ohm's Law

















Be sure to copy these down!

....and for those of you who enjoy the triangle, here ya go!