Ohms Law worksheet | Sherwin Inigo - Free Printable

Here is the solution to the Ohm’s Law worksheet, with explanations for each question:

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Ohm’s Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). The formula is:

> V = I × R

From this, we can rearrange to find any variable:

- I = V / R
- R = V / I

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Question 1: What is the formula to find current?

✔ Correct Answer: D. I = V/R

Explanation:
To find current (I), you divide voltage (V) by resistance (R). This comes from rearranging V = I × R → I = V/R.

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Question 2: What is the formula to find voltage?

✔ Correct Answer: C. V = I × R

Explanation:
This is the standard form of Ohm’s Law. Voltage equals current multiplied by resistance.

*(Note: Option A is also “V = I × R” — it appears there’s a typo in the worksheet where both A and C are identical. Assuming this is an error, and C is intended as the correct choice, or perhaps A was meant to be different. But since both say the same thing, either A or C would technically be correct. However, based on standard formatting, we’ll assume C is the intended answer.)*

But looking again — actually, Option A is “V = I x R” and Option C is also “V = I x R” — so both A and C are the same. This is likely a printing error. Since the question asks to choose the *best* answer and both are correct, we pick C (as it’s listed second, but really both are right).

However, in multiple-choice tests, if two options are identical, usually one is a mistake. But since they’re the same, any of A or C is acceptable. For consistency, we'll go with C.

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Question 3: What is the formula to find resistance?

✔ Correct Answer: A. R = V/I

Explanation:
Rearranging Ohm’s Law: V = I × R → R = V/I.

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

✔ Correct Answer: B. V = 1000 volts

Explanation:
Use Ohm’s Law:
V = I × R
V = 5 A × 200 Ω = 1000 volts

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

✔ Correct Answer: A. R = 3 Ω

Explanation:
Use Ohm’s Law:
R = V / I
R = 6 V / 2 A = 3 Ω

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## ✔ Final Answers:

1. D
2. C *(or A — both are identical; likely a typo, but C is selected for consistency)*
3. A
4. B
5. A

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Let me know if you’d like a diagram or mnemonic to remember Ohm’s Law!