Ohms Law worksheet worksheet - Free Printable

Let’s solve each question one by one using Ohm’s Law.

Ohm’s Law says:
Voltage (V) = Current (I) × Resistance (R)
We can rearrange this formula to find any of the three values if we know the other two.

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Question 1: What is the formula to find current?

We start with V = I × R
To find I, divide both sides by R:
→ I = V / R

Look at the options:
A. I = V x R → wrong
B. I = R/V → wrong
C. I = R x V → same as A, wrong
D. I = V/R → ✔ correct

✔ Answer for Q1: D

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Question 2: What is the formula to find voltage?

This is the basic form of Ohm’s Law:
→ V = I × R

Options:
A. V = I x R → ✔ correct
B. V = R/I → wrong
C. V = I x R → same as A? Wait — actually, looking again, option C is written “V = I x R” too? Let me check original:

Original says:
A. V = I x R
B. V = R/I
C. V = I x R ← wait, that’s duplicate? Probably a typo in your image or transcription. But in standard multiple choice, only one should be correct.

Wait — let me re-read your input:

You wrote:
> 2. What is the formula to find voltage?
> A. V = I x R
> B. V = R/I
> C. V = I x R
> D. V = I/R

Hmm — A and C are identical? That must be an error. But since V = I × R is correct, and both A and C say that, perhaps it's a copy-paste mistake. In real tests, usually only one option matches.

But based on science, V = I × R is correct. So either A or C would be right — but since they’re the same, maybe you meant C to be something else? Looking back at your original text:

Actually, in your message, for question 2, option C is written as “V = I x R” — same as A. That’s likely a typo. But in standard Ohm’s law, V = I × R is correct.

Assuming it’s a duplication error, and the intended correct answer is A (as it’s listed first), or perhaps in the actual worksheet, C was different. But based on what’s written here, both A and C are technically correct — which isn’t fair for a test.

Wait — let me double-check your original input carefully:

You wrote:
> 2. What is the formula to find voltage?
> A. V = I x R
> B. V = R/I
> C. V = I x R
> D. V = I/R

Yes — A and C are identical. This is probably a mistake in copying. But since V = I × R is the correct formula, and it appears in A and C, I’ll assume the intended correct choice is A, as it’s listed first. Or perhaps in the original image, C was different — like maybe “V = R × I” which is mathematically same, but written differently.

In any case, scientifically, V = I × R is correct.

So I’ll go with A as the best answer (assuming C was meant to be different).

✔ Answer for Q2: A

*(Note: If in your actual worksheet, option C is different, please check — but based on given text, A is correct.)*

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Question 3: What is the formula to find resistance?

Start with V = I × R
Divide both sides by I:
→ R = V / I

Options:
A. R = V/I → ✔ correct
B. R = I/V → wrong
C. R = I x V → wrong
D. R = V x I → wrong

✔ Answer for Q3: A

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Question 4: If current I = 5 A and resistance R = 200 Ω, find the voltage V.

Use V = I × R
V = 5 × 200 = 1000 volts

Check options:
A. 120 V
B. 1000 V → ✔
C. 100 V
D. 40 V

✔ Answer for Q4: B

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Question 5: If voltage V = 6 volts and current I = 2 A, find the resistance R.

Use R = V / I
R = 6 / 2 = 3 Ω

Options:
A. R = 3 Ω → ✔
B. R = 6 Ω
C. R = 75 Ω
D. R = 1/3 Ω

✔ Answer for Q5: A

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Final Answer:
1. D
2. A
3. A
4. B
5. A