Two resistors A and B of \(12\ \Omega\) and \(24\ \Omega\) respectively are connected in series with a \(6\text{ V}\) battery. The total heat dissipated in the resistors in 1 second will be ______.
1.0 J
Resistors in series add directly: \(R_{eq} = 12 + 24 = 36\ \Omega\).
Power dissipated by the battery is \(P = \dfrac{V^2}{R_{eq}} = \dfrac{6^2}{36} = 1\text{ W}\). Heat produced in 1 second is \(H = P \cdot t = 1 \times 1 = 1.0\text{ J}\).
Hence, 1.0 J is correct.
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A physical geographer compares two coastal cities: one at the equator and one near the poles. Both receive the same duration of sunlight in a day. The reason the equatorial city remains warmer is:
An ecologist analyzes wind patterns and concludes they originate from the equator toward the poles. The underlying principle for this observation is:
Water stored in earthen pots remains cool even in summer due to _____.
The radiations emitted by a hot furnace are:
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In summer season, the top and outer surface of the house are painted white because:
Which of the following is a process in which hot, less dense materials rise upward and are replaced by colder, more dense materials?
What is the heat released by a heating filament rated 24 W when it is kept on for 6 seconds?
Space is left between logs of wood when they are burnt, so that:
On a hot summer afternoon, the tent made up of fabric will be preferred as white colour is: