An AC source operates at a maximum voltage of 60 V and is connected to a 0.7 mF capacitor. If the current across the capacitor is i(t) = iMAX cos[(100 s−1 )t], a) What is iMAX? b) Draw the phasors for voltage across the capacitor and current in the circuit at t = 0.02 s. Assume that the current phasor begins at 0°.

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Multiple Choice

An AC source operates at a maximum voltage of 60 V and is connected to a 0.7 mF capacitor. If the current across the capacitor is i(t) = i_MAX cos[(100 s⁻¹ )t],
a) What is i_MAX?
b) Draw the phasors for voltage across the capacitor and current in the circuit at t = 0.02 s. Assume that the current phasor begins at 0°.

a) i_max = 4.2A b) θ_iC = 115^o θ_VC = 185^o

a) i_max = 4.2A b) θ_iC = 185^o θ_VC = 115^o

a) i_max = 4.2A b) θ_iC = 115^o θ_VC = 25^o

a) i_max = 4.2A b) θ_iC = 25^o θ_VC = 115^o

Master Phasors for Capacitors with a bite sized video explanation from Patrick Ford