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WorksheetsFIVIZZ: WEEK 8 - PHYSICS 3
Total questions: 10
Worksheet time: 10mins
This is a
capacitor
resistor
inductor
Based on the diagram, select the correct answers
A is lagging B
C is leading A and B
A and B are leading C and D
A is leading B but lagging to C
A 400 mH coil of negligible resistance is connected to an AC circuit in which an effective current of 6 mA is flowing. Find out the voltage across the coil if the frequency is 1000 Hz.
V = 15.079V (RMS)
V = 21.844V (RMS)
V = 7.536V(RMS)
V = 10.922V (RMS)
Find the impedance of a series RLC circuit if the inductive reactance, capacitive reactance and resistance are 184 Ω, 144 Ω and 30 Ω respectively
30Ω
50Ω
25Ω
70Ω
A 500 μH inductor, 80/π2 pF capacitor and a resistor are connected to form a series RLC circuit. Calculate the resonant frequency of this current.
1250 KHz
1900 KHz
2500 KHz
1600 KHz
The equation for an alternating current is given by i = 77 sin 314t. Find the frequency.
75Hz
25Hz
100Hz
50Hz
If an R = 1-kΩ resistor, a C = 1-µF capacitor, and an L = 0.2-H inductor are connected in series with a V = 150 sin (377t) volts source, what is the maximum current delivered by the source?
27mA
34mA
54mA
68mA
A high-voltage powerline operates at 500 000 V-rms and carries an rms current of 500 A. If the resistance of the cable is 0.050Ω/km, what is the resistive power loss in 200 km of the powerline?
2.5 Megawatts
250 kW
500 kW
1 Megawatt
Calculate the capacitive reactance of a 10uF capacitor at 100 kHz.
0.159 Ω
1.592 Ω
0.318 Ω
3.183 Ω
What is the average power dissipation in an RLC series circuit with R = 10Ω, L = 0.1 H, C = 10 µF when driven at resonance by a 100 V-rms source?
1000 W
500 W
2000 W
100 W
