B: 1 J/C
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A lamp rated 6 V, 2A is switched on for 60 s. How much energy is used?
An alternating voltage of frequency 0.5 Hz is applied to the Y-plates of a cathode-ray oscilloscope (c.r.o.). The dia…
A transformer connected to a 240V mains supply is used to light a 24 W lamp. The input current to the transformer is …
A certain liquid is used in a liquid-in-glass thermometer. It does not expand uniformly with temperature. What effect…
An ice pack is used to cool 0.25 kg of water. The specific heat capacity of water is 4.2 kJ/(kg°C). How much thermal …
Fillings in teeth should be made from a material which