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How do you jump start a positive ground vehicle?

How do you jump start a positive ground vehicle? A jump start, also known as boost, is a method to start a vehicle with a booted discharge battery. A temporary connection to the battery of another vehicle or to another external power source is established. The external power supply charges the battery of the disabled … Read more

Can current be negative?

Can current be negative? Can current be negative? As from question you thought that its wrong, but no friend question is right but current is never negative but its calculation at end its as negative, let’s understand in details. In this figure, several connecting elements are provided by conducting the wires, indicating the direction and … Read more

How is a capacitor different from a battery?

How is a capacitor different from a battery? Batteries and condensers seem similar because they store and release electricity. However, there are key differences between them that affect their potential applications due to how they work differently. A capacitor consists of two or more conductive plates separated by a dielectric. When an electric current enters … Read more

Can there be a potential difference without current?

Can there be a potential difference without current? The electric potential is the potential electric power per unit charge, measured in joules per coulomb (volts). The “electric potential” must be distinguished from the “electric potential” by noting that the “potential” is a “per unit of charge”. Like the potential mechanical energy, zero can be chosen … Read more

What happens to a resistor when it fails?

What happens to a resistor when it fails? A fixed composition resistor normally fails in an open configuration when overheated or too demanding due to shocks or vibrations. Excessive humidity can cause an increase in resistance. A resistive composition resistor can wear after extensive use and worn particles can cause high resistance short circuits. Resistors … Read more

What happens when a resistor is short circuited?

What happens when a resistor is short circuited? A short circuit is an abnormal connection between two nodes of an electrical circuit designed to be at different voltages. This results in an electric current limited only by the Thevenin equivalent resistance of the rest of the grid, which can cause circuit damage, overheating, fire or … Read more

What is a pure inductor?

What is a pure inductor? Inductors do not behave just like resistances. While the resistors simply oppose the flow of electrons through them (by lowering a voltage directly proportional to the current), the inductors resist the current changes through them, lowering a voltage directly proportional to the current change rate. According to Lenz’s law, this … Read more

Why do you use a resistor with an LED?

Why do you use a resistor with an LED? When you talk about resistor with LED then first in your mind got Why do you need an LED resistor? Resistor used in LED to limit the LED current to a safe value. increase life of LEDs by limiting over value current passing through it by … Read more

What do you use a resistor for?

What do you use a resistor for? Resistor can be used to reduce the voltage or current available in a circuit by adding resistance between 2 components of circuit. The role of the resistor in an electrical circuit: NOTE: The diagrams, links and practical questions in this document still need to be added: in DC or … Read more