A high impedance AC voltmeter is connected in turn across the inductor, the capacitor and the resistor in a series circuit having an AC source of 100V (rms) and gives the same reading in volts in each case. This
A Wheatstone bridge is constructed using four resistors connected in a bridge with a galvanometer connected in between the bridge. The bridge is considered balanced when the ratio of two opposite resistors is equal to the ratio of the other opposite pair of resistor. A Wheatstone bridge ...
All normal conductors have a small amount ofresistance. If too much current is put through a conductor, it will start to heat up. This can cause a fire on an overloaded electrical circuit. Superconductors have no resistance, allowing them to carry a potentially unlimited amount of current. Key...
Consider the circuit shown in the figure, where ε1 = 21.7 V, ε2 = 12.3 V, and R = 14.0 Ω. What is the current (in A) in the 14.0 Ω resistor? EMF and Internal Resistance The EMF of a cell is the potential diff...
Thedefinition ofthe resistoris, it is a basic two-terminalelectrical and electronic componentused to restrict the current flow in a circuit. The resistance toward the flow of current will result in the voltage drop. These devices may provide a permanent, adjustable resistance value. The value of...
The most common type of varistor (e.g., variable resistor) is the metal-oxide varistor (MOV), which usually consists of zinc-oxide grains along with other metal oxides between two metal plates. Diode-like behavior is exhibited between different grains of...
The primary role of a UPS is to bridge the gap between a power loss and the activation of a longer-term backup power system, like a generator. The Mechanics Behind UPS Technology From the power grid, a computer expects to get (in the United States) 120-volt AC power oscillating at 60...
semiconductor electronic components, such as integrated circuits (ICs), transistors, diodes, and LEDs, among others. These small pieces of technology are embedded in and power a wide range of electronic devices, from smartphones to automobiles, playing a vital role in our hyper-connected daily ...
In the lumped-element model, it can be represented as a series connection of a resistor and capacitor (or multiple instances thereof) in parallel with a device’s nominal capacitance. Practically, this means that a capacitor held at DC potential for some length of time and then briefly ...
Final Thoughts Though small and simple, the diode is an essential part of modern electrical systems. By controlling the flow and direction of current, diodes enable countless applications of modern electronics. Fortunately, tools like digital multimeters make it easy to measure diode health and determ...