I just wanna know how to solve these problems and what formula to use
1. If a capacitor is rated for 200Volts dc, what is its effective ac working voltage?
a. 50V
b. 200V
c. 100V
d. 400V
2. Suppose a 1-kΩ resistor will dissipate 1.05W, and you have many 1-W resistors of all common values. If there's room for 20 percent resistance error, the cheapest solution is to use:
A. Four 1 kΩ, 1-W resistors in series-parallel
B. Two 2.2kΩ, 1-W resistors in parallel
C. Three 3.3kΩ, 1-W resistors in parallel
D. One 1kΩ, 1-W resistor, since manufacturers allow for a 10 percent margin of safety
1. If a capacitor is rated for 200Volts dc, what is its effective ac working voltage?
a. 50V
b. 200V
c. 100V
d. 400V
2. Suppose a 1-kΩ resistor will dissipate 1.05W, and you have many 1-W resistors of all common values. If there's room for 20 percent resistance error, the cheapest solution is to use:
A. Four 1 kΩ, 1-W resistors in series-parallel
B. Two 2.2kΩ, 1-W resistors in parallel
C. Three 3.3kΩ, 1-W resistors in parallel
D. One 1kΩ, 1-W resistor, since manufacturers allow for a 10 percent margin of safety
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