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An active two terminal network with open circuit voltage of 12V and short circuit current of 2A has been measured_____ ?
(12V/2A)=6 12/(6+2)=1.5A
As shown in the figure, when 100V voltage is applied to a and B ends of the circuit, the open circuit voltage at C and D ends is 80V, then the resistance value of resistance R is_ Ω
5、 Question 5 in this week's self test
80, 40 very simple (1) when 100V voltage is applied at both ends of a and B, the open circuit voltage at both ends of C and D is 80V, which means that the voltage at both ends of R is 80V, so that the voltage at both ends of the 20 Ω (as a whole) resistor is 20V, so using the deduction of Ohm's Law (U1 / R1 = U2 / r2), we can know that the resistance of R is 80 Ω (2)
A capacitor and a resistor are connected in series on a 220 V AC power supply. Given that the voltage drop on the resistor is 120 V, what is the voltage on the capacitor?
Fundamentals of Electrical Engineering
220 V power supply voltage will not change, resistance voltage 120 V, capacitance at both ends of course is 220 V - 120 V = 100 v
As shown in the figure, R1 = 10, R2 = 120, when both ends of a and B are connected with 100V power supply, and the reading of ideal voltmeter connected at both ends of C and D is 80V, the resistance R=
Here are 22 questions
As shown in the figure, R1 = 10, R2 = 120, when both ends of a and B are connected with 100V power supply, the reading of ideal voltmeter connected at both ends of C and D is 80V, then resistance R = R2 is equivalent to wire, so the voltage measured by Voltmeter is the voltage at both ends of R, so R1 voltage is 100-80 = 20V, I = U1 / R1 = 20 / 10 = 2A, R2 = U1 / I = 80 / 2 = 40
RELATED INFORMATIONS
- 1. A capacitor and a resistor are connected in series on the 220 V AC power supply. It is known that the voltage drop on the resistor is 120 V, so what is the voltage on the capacitor
- 2. It is known that R1 = 3 Ω and R2 = 6 Ω are connected in parallel, and the main circuit current is 1.5 A. what is the voltage of each resistor
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- 6. The current comes out from the positive pole of the power supply and then goes through the consumer. Is it connected to the positive pole or negative pole of the consumer
- 7. The voltmeter should be connected in parallel with the measured appliance,
- 8. If the voltmeter is connected in parallel with the consumer and power supply, whose voltage is measured by the voltmeter
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