Delmars Unit 21 Resistive questions with complete solutions 2024

Delmars Unit 21 Resistive-Capacitive
Series Circuits
You connect a clamp-on ammeter and a voltmeter to a series RC circuit
powered by a 60-Hz circuit. The voltage reads 240 V and the current is 0.715
A. The resistor is 150 Ω. What is the true power?
111.6 W
153.36 W
192 W
335.66 W - correct answer ✔153.36 W


In a series RC circuit, apparent power can be calculated by _____.
EC × I
ER × I
ET × I - correct answer ✔ET × I


A series RC circuit contains two resistors and two capacitors. The resistors
are 39 Ω and 56 Ω. The capacitors have capacitive reactances of 80 Ω and 40
Ω. When calculating the circuit values, what is the total resistance?
25 Ω
130 Ω
95 Ω
125 Ω - correct answer ✔95 Ω


A series RC circuit has two resistors and two capacitors. The resistors
dissipate 9 W and 15 W. The capacitive powers are 18 VARs and 9 VARs.
The applied voltage is 277 V. What is the circuit current?
130.4 mA

, 7.67 mA
7.67 A
130.4 A - correct answer ✔130.4 mA


A series RC circuit contains two resistors and two capacitors. The resistors
are 82 Ω and 47 Ω. The capacitors have capacitive reactances of 80 Ω and 50
Ω. What is the total impedance?
84.75 Ω
14.56 Ω
68.62 Ω
183.14 Ω - correct answer ✔183.14 Ω


Dividing a circuit's total applied voltage by the total impedance results in the
total _____.
VA
current
power
VARs - correct answer ✔current


In a series RC circuit, total impedance is a combination of resistance and
capacitive reactance.
True
False - correct answer ✔True


In a series RC circuit, the resistor voltage is 124 V and the capacitor voltage is
167 V. What is the total voltage?
111 V
143 V