PHYSICS F/SCI.+ENGR.W/MOD...-W/ACCESS
PHYSICS F/SCI.+ENGR.W/MOD...-W/ACCESS
4th Edition
ISBN: 9780133941579
Author: GIANCOLI
Publisher: PEARSON
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Question
Chapter 29, Problem 1Q
To determine

The advantage of using coil with many turns in Faraday’s experiments.

Expert Solution & Answer
Check Mark

Answer to Problem 1Q

The advantage of using coil with many turns in Faraday’s experiment increases the values of the quantities to be experimentally measured.

Explanation of Solution

From the experiment shown in the Figure 29-1, Faraday concluded that a constant magnetic field does not produce current in the conductor, but a changing magnetic field can produce a current, this current is known as induced current. And also changing magnetic field induces an emf.

From the Faraday’s law, write the expression for induced emf if the circuit contains N number of loops.

    ε=NdΦdt        (I)

Here, ε is the induced emf, N is the number of loops, and Φ is the flux.

Write the expression for induced current.

    I=εR        (II)

Here, I is the induced current, and R is the resistance.

Use equation (I) in (II).

    I=NRdΦdt        (III)

Equation (I) and (III) shows that, the induced emf and therefore induced current are proportional to number of turns.

Conclusion:

Therefore, the advantage of using coil with many turns in Faraday’s experiment increases the values of the quantities to be experimentally measured.

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Chapter 29 Solutions

PHYSICS F/SCI.+ENGR.W/MOD...-W/ACCESS

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