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An electric doorbell uses an electromagnet to pull on a steel hammer that rings the bell....

An electric doorbell uses an electromagnet to pull on a steel hammer that rings the bell. The electromagnet has inductance 65.0 mH and resistance 7.86 Ω (meaning you can treat it as an LR circuit with the inductance in series with the resistance). It operates from a 6.00-V source. How long does it take for the current in the electromagnet to reach 0.700 A?

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Answer #1

OS Icetat (1-e-BF) $ 0.1- 6 (1- 2 * ) > PE = 2.759 t= 2.759x65x10-3 7-06 7.86 = 22.8 ms Answer

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