Ques1) The above figure shows an arrangement to measure the emf and internal resistance of the battery. Suppose the voltmeter reads 1.52 v when the switch S is open. When the switch is closed the voltmeter reading drops to 1.45 V and the ammeter reads 1.0 A. Find the emf and internal resistance of the battery.
Ques2) When is the rate at which energy is being delivered to a ligh bulb higher - just after it is turned on, and the glow of the filament is increasing, or after it has been for a few seconds and the glow is steady?
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