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प्रश्न
Name the material which is used for making the heating element of an electric iron.
उत्तर
The coils of the heating element of an electric iron is made of alloys like nichrome because alloys have a high resistance and a high melting point.
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संबंधित प्रश्न
Why is the series arrangement not used for domestic circuits?
(i) Two sets A and B, of three bulbs each, are glowing in two separate rooms. When one of the bulbs in set A is fused, the other two bulbs also cease to glow. But in set B, when one bulb fuses, the other two bulbs continue to glow. Explain why this phenomenon occurs.
(ii) Why do we prefer arrangements of Set B for house circuiting?
If the length of a wire is doubled by taking more of wire, what happens to its resistance?
Choose the correct alternative and rewrite the following:
You are given three equal resistances. In how many combinations can they are arranged?
What material is used for making wire to prepare heating coils? Give a reason.
The voltage applied to a given rheostat is made four times its initial value. By what factor will be resistance of the rheostat change?
State expression for Resistance connected in series.
The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.
