the asked in Science & MathematicsPhysics · 1 month ago

Determine the current flowing through R1 after the switch S is opened for 2 × 10−3 s.?

After a very long time the switch S is closed, the current flowing through the circuit has reached maximum value. The switch S is now opened.

Determine the current flowing through R1 after the switch S is opened for 2 × 10−3 s.

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  • oubaas
    Lv 7
    1 month ago

    Timeconstant T = L/(16+8) = 40/24 = 5/3 di msec 

    I = 20/16 = 5/4 = 1.25 A

    I' = I*(R1+R2)/T1 = 1.25*24/16 = 1.875 A 

    I'' = I'*2.7182818^-(2/(5/3)) = 0.56 A 

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