Question
What formula is used to calculate current in a circuit?
Answer Options
- A) I = E x R
- B) I = E / R
- C) I = E + R
- D) I = E – R
Correct Answer: B
Explanation
This is one of the three primary forms of Ohm’s Law, which describes the relationship between Voltage (\text{E}), Current (\text{I}), and Resistance (\text{R}). To calculate current, you divide the voltage by the resistance: I = E / R.
This formula shows that current is directly proportional to voltage (higher pressure means more flow) and inversely proportional to resistance (more opposition means less flow).
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