Physics
Working of safety fuses depends upon1. magnetic effect of the current2. chemical effect of the current3. magnitude of the current4. heating effect of the currentSelect the correct answer using the code given below.

3 and 4 only
1, 2, 3 and 4
4 only
1, 2 and 3 only

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Physics
Pressure Cooker cooks faster because

The material of the cooker is a good conductor
Boiling point decreases with rise of pressure
It cooks the food at low pressure
Higher temperature is attained for cooking

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