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LuckyWell [14K]

4 years ago

10

What EMF is produced if a waffle iron that draws 2.5 amperes and has an inductance of 560 millihenries is suddenly unplugged, so

the current drops to essentially zero in 0.015 seconds

1 answer:

puteri [66]4 years ago

7 0

Answer:

93 V

Explanation:

use the expression for induced emf as

EMF = L dI/dt

L = 560 x 10⁻³

dI = 2.5 A

dt = 0.015 s = 15 x 10⁻³ s

EMF = L dI/dt

= 0.560 * 2.5/0.015

= 93.33 V

≅ 93 V

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3 years ago

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