Question

why does a heater having low resistance get heated more.

Answer 1

If you use a very small resistance AND the circuit design is such that the voltage drop is across the resistance of the heating-wire-circuit, [nothing else in the circuit is limiting current flow] you will get more heating. That's what we have in a heat anticipator internal-nichrome-wire-heater device.

Answer 2

A heater with low resistance gets heated more because it allows more current to flow through it, resulting in more heat being produced due to resistive heating. This is because of the relationship between resistance, current, and power.

• The resistance of a material is a measure of how much it resists the flow of electrical current through it. The unit of resistance is ohms (Ω).
• When an electrical current flows through a material, it produces heat due to the resistance of the material. This is known as Joule heating or resistive heating.
• The amount of heat produced is proportional to the current flowing through the material and the resistance of the material.
• The formula for calculating the power (P) dissipated by a resistor is P = I^2R, where I is the current flowing through the resistor and R is the resistance of the resistor.
• Therefore, a heater with low resistance will produce more heat for the same amount of current flowing through it compared to a heater with high resistance.
• In practical terms, a heater with low resistance can draw more current from the electrical supply and produce more heat, making it more effective in heating a room or space.
• However, it's important to note that a heater with low resistance also consumes more power, which can lead to higher energy bills and potential safety issues if the electrical circuit is not designed to handle the higher current draw.

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