An inductor of 10 mH is connected to a 20 V battery through a resistor of 10 kΩ and a switch. After a long time, when maximum current is set up in the circuit, the current is switched off. The current in the circuit after 1 µs is x/100 mA. Then x is equal to _______. (Take e?¹ = 0.37)

0 5 Views | Posted a month ago
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  • R

    Answered by

    Raj Pandey | Contributor-Level 9

    a month ago

    I = I? e? /?
    = (20/10000) e^- (1×10? / 10×10? ³)
    = 2 × 10? ³ e? ¹
    The provided solution calculates as:
    = 2 × 10? ³ e? ¹
    = 2e? ¹ mA
    = 2 × 0.37mA
    = 0.74 mA = 74/100 mA
    (Note: There seems to be a calculation discrepancy in the source image, the steps shown lead to I = 2e? ¹ mA)

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