(adsbygoogle = window.adsbygoogle || []).push({}); 1. The figure shows a five-turn, 1.0-cm-diameter coil with R = 0.20 ohms inside a 2.0-cm-diameter solenoid. The solenoid is 9.0 cm long, has 130 turns, and carries the current shown in the graph. A positive current is cw when seen from the left.

Determine the current in the coil at = 0.010s.

2. flux = BAcos(theta), faraday's law

3. By the graph, the equation for current as a function of time is 0.5A - 50(A/s)t. Plugging in t = 0.010s gives I=0. This seems deceptively easy.....

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# Homework Help: Current as a function of time in a solenoid

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