Concept explainers
The magnets are moved into the wire coils in identical quick fashion. Voltage induced in each coil causes a current to flow, as indicated on the galvanometer. Neglect the electrical resistance of the loops in the coil.
a. Rank from greatest to least the reading on the galvanometer.
b. Make the same ranking, only this time for each coil having twice as many loops as in part (a).
a).
To arrange: the reading of galvanometer in decreasing order.
Answer to Problem 21A
The decreasing order of the galvanometer is :
Explanation of Solution
Given:
System A:
System B:
System C:
Concept Used:
The relation between the voltage and the number of coils is given as :
Calculation:
For system A:
The voltage produced is calculated as:
For system B:
The voltage produced is calculated as:
For system C:
The voltage produced is calculated as:
From (1) , (2) & (3) we get:
Conclusion:
The galvanometer readings greatest to least:
b).
To arrange: the reading of the galvanometer in decreasing order when the loops having twice coils in all systems.
Answer to Problem 21A
The decreasing order of the galvanometer is :
Explanation of Solution
Given:
System A:
System B:
System C:
Concept Used:
The relation between the voltage and the number of coils is given as :
Calculation:
For system A:
The voltage produced is calculated as:
For system B:
The voltage produced is calculated as:
For system C:
The voltage produced is calculated as:
From (4) , (5) & (6) we get:
Conclusion:
The galvanometer readings greatest to least:
Chapter 37 Solutions
Conceptual Physics: The High School Physics Program
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