a cell of emf E and internal resistance 'r' gives a current of 0.8A with an external resistors of 24 ohm's and a current is 0.5A with an external resistors of 40 ohm's
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The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere. Radiatively active gases in a planet's atmosphere radiate energy in all directions
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