Purchase Solution

Calculating inductance and maximum current

Not what you're looking for?

Ask Custom Question

Consider an RL circuit in which there's a 9.0 V battery, R = 5.5 ohms, L is unknown, and there's a switch that can be open or closed. When the switch is closed, the current in the circuit is observed to increase from 0 to 0.22 A in 0.15 seconds.

(a) What is the inductance L?
(b) How long after the switch is closed does the current have the value 0.40 A?
(c) What is the maximum current that flows in this circuit?

Purchase this Solution
Solution Summary

This solution is provided in 110 words. It discusses steady-state current to find maximum current, and uses equations for current to find inductance and time.

Solution Preview

Steady-state Current = 9/5.5 = 1.64 A since the inductance becomes a short ckt in the d.c. ckt after a long time and this ...

Purchase this Solution
Free BrainMass Quizzes
Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Basic Physics

This quiz will test your knowledge about basic Physics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

The Moon

Test your knowledge of moon phases and movement.

View More Free Quizzes
Related BrainMass Solutions

  • Mutual inductance and inductance of a transformer primary

    3) What is the inductance L of the primary of a transformer whose input is 220 V at 60 Hz and the current drawn is 5.8A? Assume no current in the secondary. Please see the attached file. 1).

  • Working with mutual inductance

    3886 Calculating the average emf induced in a secondary current. The mutual inductance of two coils is 0.750 H. How do I find the average emf induced in the secondary if the current in the primary reaches 6.00 A in 0.0300s?

  • AC-LCR Circuits: Inductance, Capacitance and Frequency

    Resonance frequency, inductance and capacitance with equations, graphs and phase diagrams.

  • Inductive Circuit Analysis

    Resistance R1 becomes redundant and can be ignored. Current I3 through the inductance does not reduce instantly; it dies down gradually.

  • EMC Problems and solutions

    A circuit supplies a 'square' current waveform, with a peak value of 25 mA and transition times of 10 ns, as shown in FIGURE 3. The ground return conductor has a resistance of 50 m and an inductance of 100 nH.

  • Word problem dealing with current and circuits

    2775 Word problem dealing with current and circuits.

  • emf induced in secondary

    7224 Multiple choice question about calculating the average emf induced. The mutual inductance of two coils is 0.750 H. Calculate the average emf induced in secondary if the current in the primary reaches 6.00 A in 0.030 sec.

  • impedance, capacitance, and indcutance

    The rms current in this circuit is 0.600 A. if the impedance of this circuit is 110 ohms, what is the maximum value of the voltage. 2.

  • Circuits and Waveforms

    602893 Circuits and Waveforms A circuit supplies a 'square' current waveform, with a peak value of 25 mA and transition times of 10 ns, as shown in FIGURE 3. The ground return conductor has a resistance of 50 mΩ and an inductance of 100 nH.

View More Related Solutions