Water Alarm

Water Alarm

We have read about conductors and insulators and performed an activity to identify them in a previous article. Here, we are going to discuss a circuit which acts as water sensor by using the fact that water is a good conductor of electricity. This circuit can also be...
Automatic Night Lamp

Automatic Night Lamp

In the earlier article, we discussed the circuit which used LDR (Light Dependent Resistance) to make Good morning alarm. With slight modification in the circuit, we can use an LDR to make automatic night lamp. The LDR senses the intensity of sound in the surrounding...
Function of Resistance : Activity

Function of Resistance : Activity

Before working on this activity, please read Resistance: A friendly foe Resistance: Value Reading Function of a Resistance Soldering the real action Material Required: LED, Resistance: 10Ω (Brown, Black, Black) 100Ω: Brown, Black, Brown 330Ω: Orange, Orange, Black 1...
Function of a Resistance

Function of a Resistance

Before reading this blog, please read; Resistance: A friendly foe Resistance: Value Reading Resistance with unit ohm is a component which is used to control current in a circuit. Resistance is the most commonly used component in any electronic circuit. It is part and...
Variable Resistance

Variable Resistance

Before reading this blog please read the following: Resistance: A friendly foe  Resistance: Value Reading A variable resistance is one whose value can be varied. In some places in an electronic circuit, we have to put such resistance so that we can vary the amount of...