Correct Answer

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Option D

Quick Summary: Given: Voltage (V) = 200V, Impedance (Z) = 50 ohm

📋 Given

Voltage (V) = 200V, Impedance (Z) = 50 ohm

🔢 Formula Used

I=VZI = \frac{V}{Z}I=ZV​

🔢 Step-by-Step Solution

Identify given values

Extract the potential difference and the total opposition to current flow from the problem statement.

V=200V,Z=50ΩV = 200V, Z = 50\OmegaV=200V,Z=50Ω

State the formula

Use Ohm's Law as applied to AC circuits, where current is the ratio of voltage to impedance.

I=VZI = \frac{V}{Z}I=ZV​

Calculate the current

Substitute the given values into the formula to find the current $I$ .

I=20050=4AI = \frac{200}{50} = 4AI=50200​=4A

✅

A is correct because dividing the voltage of 200V by the impedance of 50 ohm results in a current of 4A.

Core Concepts Used

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Ohm's Law AC Circuit Impedance Current Calculation

💡 EXAM TIP

In DC circuits, we use resistance (R), but in AC circuits, we use impedance (Z) which accounts for resistance, inductive reactance, and capacitive reactance.

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