Question: The time constant t for an LR circuit must be some combination of L, R, and . (a) Write the units of each of these

The time constant t for an LR circuit must be some combination of L, R, and ℰ.
(a) Write the units of each of these three quantities in terms of V, A, and s.
(b) Show that the only combination that has units of seconds is L/R.

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