The voltage across a resistor in a circuit is 12 volts and the current through it is 2 amperes. What is the resistance of the resistor? A. 6 ohms B. 8 ohms C. 10 ohms D. 14 ohms 相关知识点: 试题来源: 解析 A。解析:根据欧姆定律,电阻等于电压除以电流,12 伏除以 2 安等于 6 欧...
The protection circuit may include a transmission gate and a PMOS transistor for producing a protection signal. The protection signal may be applied to a gate and/or a drain and/or a source and/or a well of the device such that a voltage across the device does not exceed the breakdown ...
The vacuum interrupter is extensively employed in the medium voltage switchgear for the interruption of the short-circuit current. The voltage across the arc during current interruption is termed as the arc voltage. The nature and magnitude of this arc voltage is indicative of the performance of th...
Thedissipationof electric energy in the form of heat, even though small, affects the amount ofelectromotive force, or driving voltage, required to produce a given current through the circuit. In fact, the electromotive forceV(measured involts) across a circuit divided by the currentI(amperes) ...
It shows that D1 operates with low current stress, and during this time, inductor L2 works as an open circuit. The voltage across D1 is equal to Vc3. Figure 13a displays the inductor current when the converter operates in DCMC2. In Fig. 13b, the voltage across D4 is shown. Figure ...
* Chapter 1 Fundamentals of Electric Circuits Section 1 Current and Voltage Text New Words and Expressions Exercises End Section1 Current and Voltage Two variables u(t) and i(t) are the most basic concepts in an electric circuit, they characterize the various relationships in an electric circuit...
aA large charging current causes the large voltage across the external resistance in the Li-ion battery-pack system. It makes the charger circuit detect the transition point of the CC to the CV stage more early than that with a small charging current. The voltage is added to the voltage at...
Limiting short-circuit currents In medium and high voltage installations, the short-circuit current is a function of the voltage and the inductive reactance of the distribution system. In order to limit the short-circuit current at the same voltage level, the only method is to increas...
Voltage cut-off circuits for cutting off the charging current to a battery from a variable direct-current generator having a shunt winding, the circuits include a voltage-responsive switch connected across the shunt winding of the generator for short-circuiting the shunt winding when the battery vo...
Current to Voltage Conversion: Converts a current source into a voltage source by applying Ohm’s law to determine the voltage across an open circuit. Circuit Simplification: Source transformation allows easier analysis and understanding of complex circuits by changing the type of sources without alter...