Explanation: This question can be solved using Ohm's Law, a fundamental principle in electronics and amateur radio. Ohm's Law states the relationship between voltage (V), current (I), and resistance (R). The formula to calculate current when voltage and resistance are known is: I = V / R Where: * I is current in amperes (A) * V is voltage in volts (V) * R is resistance in ohms (Ω) Given: * Voltage (V) = 200 volts * Resistance (R) = 100 ohms Substituting the values into the formula: I = 200 V / 100 Ω I = 2 amperes Therefore, the current through the resistor is 2 amperes. Options B, C, and D are incorrect because they do not result from the correct application of Ohm's Law with the given values. For example, 1 ampere (B) would imply a voltage of 100V (1A * 100Ω), not 200V.