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1) A circuit consisting of a voltage supply (20V), a switch, a resistor (1000) and toroid (μ-3000) of length 5 cm and cr
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1) A circuit consisting of a voltage supply (20V), a switch, a resistor (1000) and toroid (μ-3000) of length 5 cm and cr
1) A circuit consisting of a voltage supply (20V), a switch, a resistor (1000) and toroid (μ-3000) of length 5 cm and cross-sectional area 1x10 m² which has a coil with 25 turns wrapped around it. At t=0 the switch is closed. a. Calculate the time constant t of the circuit. b. Calculate the final current, lo, and plot a graph showing how the current builds up as a function of time when the switch is closed. C. Calculate the energy stored in the circuit.