What do you mean by the heating effect of electric current? Explain the production of heat in a resistor by the flow of electric current through it. Name two devices based on the heating effect of current.
(N/A) The heating effect of electric current is the phenomenon where heat is generated in a conductor when an electric current passes through it.
When an electric current flows through a resistor,the electrons move through the conductor and collide with the atoms or ions of the resistor. During these collisions,the kinetic energy of the electrons is transferred to the atoms of the resistor,causing them to vibrate more vigorously. This increase in the vibrational energy of the atoms manifests as an increase in the temperature of the resistor,resulting in the production of heat.
Two devices based on the heating effect of electric current are:
$(i)$ Electric iron
$(ii)$ Electric geyser
When an electric current flows through a resistor,the electrons move through the conductor and collide with the atoms or ions of the resistor. During these collisions,the kinetic energy of the electrons is transferred to the atoms of the resistor,causing them to vibrate more vigorously. This increase in the vibrational energy of the atoms manifests as an increase in the temperature of the resistor,resulting in the production of heat.
Two devices based on the heating effect of electric current are:
$(i)$ Electric iron
$(ii)$ Electric geyser
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Similar Questions
$(a)$ What is meant by saying that the potential difference between two points is $1$ volt?
$(b)$ Why does the connecting cord of an electrical heater not glow while the heating element does?
$(c)$ Electrical resistivities of some substances at $20^{\circ}C$ are given below:
Silver $1.60 \times 10^{-8} \, \Omega m$ Copper $1.62 \times 10^{-8} \, \Omega m$ Tungsten $5.2 \times 10^{-8} \, \Omega m$ Iron $10.0 \times 10^{-8} \, \Omega m$ Mercury $94.0 \times 10^{-8} \, \Omega m$ Nichrome $100 \times 10^{-6} \, \Omega m$
Answer the following questions in relation to them:
$(i)$ Among silver and copper, which one is a better conductor? Why?
$(ii)$ Which material would you advise to use in electrical heating devices? Why?
$(b)$ Why does the connecting cord of an electrical heater not glow while the heating element does?
$(c)$ Electrical resistivities of some substances at $20^{\circ}C$ are given below:
| Silver | $1.60 \times 10^{-8} \, \Omega m$ |
| Copper | $1.62 \times 10^{-8} \, \Omega m$ |
| Tungsten | $5.2 \times 10^{-8} \, \Omega m$ |
| Iron | $10.0 \times 10^{-8} \, \Omega m$ |
| Mercury | $94.0 \times 10^{-8} \, \Omega m$ |
| Nichrome | $100 \times 10^{-6} \, \Omega m$ |
Answer the following questions in relation to them:
$(i)$ Among silver and copper, which one is a better conductor? Why?
$(ii)$ Which material would you advise to use in electrical heating devices? Why?
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