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rewq320 2015-5-3 05:33 PM

Calculate the Current

A Coil has a resistance of 8ohm and inductance of 12H. Calculate
(a) the current across a 24V d.c. power supply ; and
(b) the energy stored in the coil when it is connected across a 24V d.c. power supply

The ans of (a) is 2.4A , i don't know how to calculate it. As far as i know,  ohm's law can be used in this case that 24/8 =  3A. However, it's not the correct ans.

[[i] 本帖最後由 rewq320 於 2015-5-3 05:41 PM 編輯 [/i]]

填不盡 2015-5-6 11:24 AM

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