Question 63Electricity/Electronics - 1st Asst/Chief70% to pass
If the values of ‘C1’ and ‘R1’ shown in the illustration were 1 microfarad and 3 megohms respectively, which of the listed intervals of time would equal one 'time constant'? Illustration EL-0086
AI Explanation
The correct answer is B) 3 seconds.
The time constant (τ) for a series RC circuit is calculated as τ = R * C, where R is the resistance in ohms and C is the capacitance in farads.
Given the values of R1 = 3 megohms and C1 = 1 microfarad, the time constant is τ = 3 megohms * 1 microfarad = 3 seconds.
The other options are incorrect because 0.33 seconds is less than the time constant, 6 seconds is twice the time constant, and 15 seconds is five times the time constant.
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