High School Physics + more
Figure 1 below presents 17 circuit symbols for a variety of circuit components like cell, battery, switch open, switch closed, ammeter, voltmeter, motor, resistor, thermistor, fuse, diode, LED (Light Emitting Diode), LDR (Light Dependent Resistor), Filament lamp, variable resistor, d.c. supply, & a.c. supply. Symbols & functions of Common components The following tables describe some […]
Voltages in series circuits and parallel circuits – Let’s see how total voltage in series circuits and parallel circuits are calculated. Voltages in series circuits A series circuit has no junction. Now if there is any group of EMFs that follow in series in such junctionless circuit then the total voltage or emf of the […]
Here we will see how current flows through series and parallel circuits. Currents in series circuits In a series circuit, devices are connected so there is only one closed path for current to follow. However, if any part of this path is broken, current will no longer flow in the circuit. Any group of components […]
In this post, we will cover How to find the Relation between resistance and resistivity through a simple experiment. It’s basically deriving the resistivity formula with our understanding of electrical resistance. Once we derive the equation or formula of resistance, the definition, symbol, and formula of resistivity will be prominent to us. To do this […]
How to identify the I-V graph of a Thermistor and the I-V graph of a filament bulb? Here we will discuss how to do that.
In this post, we will study a simple parallel circuit. Then we will derive the equivalent resistance formula in a parallel circuit. Using this formula, we will solve numerical problems related to parallel circuits. Simple Parallel circuit | Resistance in Parallel | Resistors in parallel A simple parallel circuit is shown below. Three resistances (resistors) […]
In this post, we will study simple series circuits with the help of a series circuit diagram. We will also go through related topics like resistance in series or resistors in series, series circuit formula of equivalent resistance, etc. This post also covers series circuit numerical problems with solutions. Series circuit | resistance in series […]
The direction of the current: We will discuss this to find out answers to two related questions here. These questions are (1) What is the direction of conventional current? (2) What is the direction of the electronic current? If two charged bodies are connected by a metallic wire, electrons start flowing from the body having […]
If two charged bodies are connected by a metallic wire, electrons start flowing from the body having more electrons (negatively charged body), to the body with less electrons (positively charged body). An electric current is produced by the flow of electrons. Thus we can say that current flows due to the motion of charges. The […]
Ohm’s law problems or numerical problems on Ohm’s law.
Ohm’s Law, Statement, formula derivation, Verification experiment, definition, calculation, V-I graph, potential difference, current, resistance