Answer :
Final answer:
The wattless component of the current in an RL circuit is calculated using the formula I = V / XL, where V is the voltage and XL is inductive reactance. Based on the given values, the calculated current does not match with the provided options
Explanation:
The student's question pertains to the wattless component of the current in a circuit with a coil and a resistor connected in series. We can determine this by first calculating the inductive reactance of the coil using the formula: XL = 2πfL where XL is the inductive reactance, f is the frequency, and L is the inductance. Based on the given information, f = 50Hz, and L = 0.7H, substituting these values into the formula, we then find XL to be approximately 220Ω.
The wattless current component, also called the reactive component, depends on the inductive reactance of the circuit, rather than on the resistance. It is given by the formula: I = V / XL where I represents the current, V is the voltage, and XL is the calculated inductive reactance. With V given as 220V and XL calculated as 220Ω, our current component I would be approximately 1A. However, since the available options do not include 1A. It would be better to recheck the calculations or consider rounding errors.
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