(b) If it is connected to a 12.0 V battery, what is the current after 12.5 ms?

College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
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Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies
Section: Chapter Questions
Problem 74PE: (a) What is the characteristic time constant of a 25.0 mH inductor that has a resistance of 4.00 ?...
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I need help wiith part b

 

Thanks!

(a) What is the characteristic time constant of a 26.6 mH inductor that has a resistance of 4.07 N?
6.5
ms
(b) If it is connected to a 12.0 V battery, what is the current after 12.5 ms?
How does the current in an RL circuit behave after it is switched on? What is the maximum current in this case? A
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Transcribed Image Text:(a) What is the characteristic time constant of a 26.6 mH inductor that has a resistance of 4.07 N? 6.5 ms (b) If it is connected to a 12.0 V battery, what is the current after 12.5 ms? How does the current in an RL circuit behave after it is switched on? What is the maximum current in this case? A Additional Materials Reading Show M. JWlarlk
Expert Solution
Step 1

the current in an RL circuit is given by i 

 

 

here i = current in circuit at time t 

V = potential diference of the battery connected 

R = resistance present in the circuit 

L = inductance of inductor connected 

t = time at which current is needed to find 

here 

L R is know  as the time constant of the circuit

 

 

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