The current flowing in an electrical circuit t seconds after it is switched off is given
Chapter 3, Problem 14(choose chapter or problem)
The current flowing in an electrical circuit t seconds after it is switched off is given by I(t) = 75e0:15t amps. a What current is still flowing in the circuit after: i 1 second ii 10 seconds? b Use your graphics calculator to sketch I(t) = 75e0:15t and I = 1. c Hence find how long it will take for the current to fall to 1 amp.
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