
Concept explainers
(a)
The emf across L
immediately after t = 0
.
(a)

Answer to Problem 32.80CP
Explanation of Solution
Given info: The battery emf is
Initially switch s is closed so the total current distribute in two current one is flow in the right loop and another current flow in the left loop.
Write the expression for the total current by Kirchhoff junction rule.
Here,
Write the expression for the current in the right loop.
Here,
Since for the steady state condition
Substitute
Substitute
Write the expression for the current in the left loop.
Substitute
Substitute
Write the expression for the voltage across the inductor by Kirchhoff loop rule after
Rearrange the term for
Substitute
Conclusion:
Therefore, the emf across
(b)
The point of the coil that have higher potential.
(b)

Answer to Problem 32.80CP
Explanation of Solution
Given info: The battery emf is
Since the current flow upwards to downward direction in the inductor coil due to some reactance of the coil the voltage drop across the inductor coil hence the point
Write the expression for the voltage drop across the inductor coil.
Here,
Conclusion:
Therefore, the point
(c)
To draw: The graph of currents in
(c)

Answer to Problem 32.80CP
Explanation of Solution
Given info: The battery emf is
The currents in
In
Figure (I)
(d)
The time at which the value of current in R 2
become 2.00 mA
.
(d)

Answer to Problem 32.80CP
Explanation of Solution
Given info: The battery emf is
Formula to calculate the current in the circuit after
Substitute
Take log and solve the equation further,
Conclusion:
Therefore, the time at which the value of current in
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Chapter 32 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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