The generation of heat in a conductor is undesirable because it represents a conversion of useful electrical energy into heat. In electric circuits, this unavoidable heating can increase the temperature of components, potentially altering their properties.

According to Joule’s law, the heat produced in a resistor is directly proportional to the square of the current. This implies that if the current through a resistor is doubled, the heat produced will increase fourfold.

Joule’s law of heating states that the heat produced in a resistor is directly proportional to three factors: (i) the square of the current for a given resistance, (ii) the resistance for a given current, and (iii) the time for ...

The heating effect of electric current is utilized in devices such as electric heaters and electric irons. In these devices, the electric current passing through resistive elements generates heat, which serves the intended purpose, such as heating a room or ...

In a purely resistive electric circuit, where resistors are connected to a battery, the source energy is entirely dissipated in the form of heat. This is known as the heating effect of electric current.

Continuous use of an electric fan can result in the gadget becoming warm, showcasing the conversion of a portion of the electrical energy into heat. This phenomenon is commonly observed in everyday life.

A portion of the energy generated by the cell is used for performing useful work, such as rotating the blades of an electric fan. Another portion of the energy is dissipated as heat, leading to an increase in temperature of ...

The battery or cell serves as a source of electrical energy. The chemical reaction within the cell generates a potential difference between its terminals, initiating the flow of electrons and establishing a current in a connected circuit.

Connecting an electric bulb and an electric heater in a series circuit is impractical because these devices need currents of widely different values to operate properly. Series circuits maintain a constant current, making it unsuitable for devices with diverse current ...

In a series circuit, when one component fails, the entire circuit is disrupted. Electricians have to spend time testing each bulb individually to find the one that has fused or gone, making the troubleshooting process time-consuming.