Title | ACquiz-Answers |
---|---|
Course | General Physics II--Electricity And Magnetism |
Institution | Harper College |
Pages | 2 |
File Size | 103.1 KB |
File Type | |
Total Downloads | 54 |
Total Views | 156 |
Exams/Notes/Homework/Practice Material...
1. A 60 Hz AC voltage reads 120V on our voltmeters. What is the amplitude of the signal? a. 120V b. 240V c. 170V d. 60V 2. A signal 𝑉 = 60𝑠𝑖𝑛120𝜋𝑡is applied across a 20Ω resistor. What will an AC ammeter in series with the resistor read? a. 2.12A b. 1.50A c. 3.00A d. 1.06A 3. A 120VAC 60Hz signal is applied across a 2μF capacitor. What is the current? a. 240μA b. 1 μA c. 0.090A d. 1.44A 4. A 120VAC 60Hz signal is applied across a 0.7 H inductor. What is the current a. 2.86A b. 0.45A c. 1.4A d. 1.43A 5. A 0.14H inductor is in series with a 12Ω resistor across a 110V, 25Hz power supply. What is the current through the coil? a. 4.4A b. 8.3A c. 5.9A d. 8.8A 6. A capacitor is connected in series with a 30Ω resistor across a 220VAC line. The capacitor reactance is 40Ω. What is the power dissipated by the circuit? a. 580W b. 691W c. 4480W d. 1613W 7. A 10mH inductor, 10μF capacitor and a 10Ω resistor are in series across a 10𝑉𝑟𝑚𝑠 power supply at the resonant frequency. What is the power dissipated in the resistor? a. 1000W b. 500W c. 100W d. 10W 8. The power dissipated by an RLC series circuit a. Increases with frequency b. is constant c. Increases with increasing frequency then at some point decreases d. Decreases with increasing frequency then at some point increases 9. A transformer has 120VAC in and 12VAC out. If the primary has 1000 windings how many are on the secondary? a. 10,000 b. 10 c. 1000 d.100
10. Which of the following is the correct phase relationship in a series RLC circuit? b
a)
b)...