Calculating Current in a Series Circuit with Inductance and Resistance

Thread starter alamin
Start date Jan 18, 2006
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Electricity

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To calculate the current in a series circuit with a coil of inductance 20 H and resistance 10 Ohms connected to a 12 V battery, the rate of change of current can be determined using the formula di/dt = V/L, where V is the voltage and L is the inductance. The final steady-state current can be found using Ohm's Law, I = V/R, resulting in a final current of 1.2 A. After 3.0 seconds, the current can be calculated using the formula I(t) = I_final (1 - e^(-Rt/L)), which accounts for the exponential growth of current in an RL circuit. It's important to show the steps taken and the equations used for clarity. Properly categorizing the question in the Homework section can facilitate better assistance.

Jan 18, 2006

alamin

A Coil with an inductance of 20 H and a resistance of 10 Ohms is connected in series with a battery of emf 12 V and a switch. Calculate the
a. rate of change current and the final current.
b. current after 3.0 seconds.

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Jan 18, 2006

You should post in the Homework section next time, and you need to provide what you have done so far with the problem, and what equations/formulas you can plug-in/apply.

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