As shown in the figure, two solenoids are in line. The switch S, initially closed, is suddenly opened. Just after opening S, what is the polarity of the induced emf in terminals X and Y? 
Definitions:
Public Assistance
Government programs designed to provide financial aid, services, or support to individuals or families in need.
Supplemental Security Income
A federal program in the United States that provides additional income to elderly, blind, or disabled individuals with little or no income to meet basic living needs.
Medical Expenses
Costs incurred by individuals for healthcare services, treatments, medications, and other health-related needs.
TANF
Temporary Assistance for Needy Families, a federal assistance program in the United States aimed at helping families achieve self-sufficiency through employment.
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