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प्रश्न
Unscramble the following words:
SFEU
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उत्तर
FUSE
APPEARS IN
संबंधित प्रश्न
Write Joule's law of heating.
An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater.
(a) How much charge flows around the circuit each second?
Why is a series arrangement not used for connecting domestic electrical appliances in a circuit?
How much heat will an instrument of 12 W produce in one minute if it is connected to the heat produced by it?
Give scientific reason :
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster, etc., an alloy such as Nichrome is used, not pure metals.
Live wire and neutral wires have a 220 V potential difference.
Name any two appliances which work under the principle of heating effect of current.
In which of the following applications of Iron, rusting will occur most? Support your answer with valid reason.
| A | B | C | D |
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Write an expression for the amount of heat produced in a resistor when an electric current is passed through it stating the meanings of the symbols used.
Anannya responded to the question: Why do electrical appliances with metallic bodies are connected to the mains through a three-pin plug, whereas an electric bulb can be connected with a two-pin plug?
She wrote: Three-pin connections reduce heating of connecting wires.
- Is her answer correct or incorrect? Justify.
- What is the function of a fuse in a domestic circuit?
