In a fluorescent lamp choke (a small transformer) 100 V of reverse voltage is produced when the choke current changes uniformly from 0.25 A to 0 in a duration of 0.025 m s . The self-inductance of the

Question

In a fluorescent lamp choke (a small transformer) $100 V$ of reverse voltage is produced when the choke current changes uniformly from $0.25 A$ to $0$ in a duration of $0.025 m s$ . The self-inductance of the choke (in $m H$ ) is estimated to be ________

Answer:

10.00

Solution:

$100 = \frac{L (0.25)}{0.025} \times 10^{3}$
$∴ L = 100 \times 10^{- 4} H$
$= 10 m H$

TestHub · Accepted Answer

100 = L 0.25 0.025 × 10 3 ∴ L = 100 × 10 - 4 H = 10 m H

Physics - EMI/AC Question with Solution | TestHub

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