How is Current Determined in a Single Phase AC Circuit with a Moving Conductor?

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SUMMARY

The discussion focuses on calculating current in a single-phase AC circuit involving a moving conductor and induced electromotive force (e.m.f). The first question involves a conductor 300mm long moving at 4m/s in a magnetic field of 1.25T, requiring calculations for both open-circuit and loaded conditions (20 ohm resistance). The second question addresses the e.m.f induced in a coil with 12 H inductance due to a current change of 4 A/s. The participants emphasize the need for relevant equations and initial problem-solving attempts to facilitate assistance.

PREREQUISITES
  • Understanding of Faraday's Law of Electromagnetic Induction
  • Familiarity with Ohm's Law and its application in circuits
  • Basic knowledge of magnetic fields and flux density
  • Concept of inductance and its role in AC circuits
NEXT STEPS
  • Study Faraday's Law and its mathematical formulation
  • Learn how to apply Ohm's Law in both open-circuit and closed-circuit scenarios
  • Research the relationship between magnetic flux density and induced current
  • Explore the concept of inductance and its effects on changing currents in coils
USEFUL FOR

Students studying electronics, educators teaching electromagnetic theory, and anyone interested in understanding the principles of current flow in AC circuits with moving conductors.

ric115
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Hi there

Im new to this site and i have noticed that you give advice to electronic questions. Presently I am studing electronics and on some of my course work i am having some difficulty in understanding some of the questions. such as,

Q1
A conductor 300mm long moves at a uniform speed of 4m/s at right-angles to a uniform magnetic field of flux density 1.25T. Determine the current flowing in the conductor when:

a) its end are open-circuited

b) its ends are connected to a load of 20 ohm resistance

and,

Q2
Calculate the e.m.f induced in a coil of inductance 12 H by a current changing at the rate of 4 A/s

Any advice or helpfull sites to visit would be much appreciated,

Thanking you in advance

Rich
 
Physics news on Phys.org
Welcome to Physics Forums.

Since you didn't post your questions in the homework section, you're unaware of our policy on this type of question (not your fault).

Can you provide:

A. any equations from your class lectures or textbook that appear to be relevant to solving the problems, and

B. provide your thoughts or attempt at solving the problems (doesn't have to lead to a final solution)
 

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