1) Consider the circuit shown in the figure. The battery has emf ? = 25 volts and negligible internal resistance. The inductance is L = 0.80 H and the resistances are R1 = 12.0 ? and R2 = 9.0 ?. Initially the switch S is open and no currents flow. Then the switch is closed. i) What is the current in the resistor R1 just after the switch is closed? a) 1.5 A b) 2.1 A c) 3.0 A d) 4.2 A e) 5.0 A
Added by Donna E.
Close
Step 1
The circuit consists of a battery with emf \( \varepsilon = 25 \, \text{V} \), an inductor \( L = 0.80 \, \text{H} \), and two resistors \( R_1 = 12.0 \, \Omega \) and \( R_2 = 9.0 \, \Omega \). Show more…
Show all steps
Your feedback will help us improve your experience
Darshan Maheshwari and 70 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In the circuit shown in the figure, the inductor has inductance L = 3.75 H and negligible internal resistance. The battery has a voltage of Vb = 18.0 V and is connected in series to a resistor of resistance R1 = 12.0 ̐. A second resistor has a resistance of R2 = 145 ̐. The switch S has been open for a long time. At time t = 0, the switch is closed. What is the current Ib,0 through the battery, the current I2,0 through resistor R2, and the current IL,0 through the inductor at t = 0? What is the current Ib,∞ through the battery, the current I2,∞ through resistor R2, and the current IL,∞ through the inductor long after the switch is closed (i.e., t = ∞).
Madhur L.
In Fig. 30.11 switch $S_1$ is closed while switch $S_2$ is kept open. The inductance is $L = 0.380$ H, the resistance is $R = 48.0 \, \Omega$, and the emf of the battery is 18.0 V. At time $t$ after $S_1$ is closed, the current in the circuit is increasing at a rate of $di/dt = 7.20$ A/s. At this instant what is $v_{ab}$, the voltage across the resistor?
Inductance
The R-L Circuit
No currents flow in the circuit diagrammed before the switch is closed. Consider all the circuit elements to be ideal. (a) At the instant the switch is closed, what are the values of the currents $I_{1}$ and $I_{2}$, the potential differences across the resistors, the power supplied by the battery, and the induced emf in the inductor? (b) After the switch has been closed for a long time, what are the values of the currents $I_{1}$ and $I_{2},$ the potential differences across the resistors, the power supplied by the battery, and the induced emf in the inductor?
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD