A cell of unknown emf E and internal resistance r is connected in series with an ideal ammeter and a 5.0 Ω resistor; the ammeter reads 0.50 A. The 5.0 Ω resistor is then replaced by an 11.0 Ω resistor (nothing else changes) and the ammeter reads 0.25 A. What are E and r?

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A cell of unknown emf E and internal resistance r is connected in series with an ideal ammeter and a 5.0 Ω resistor; the ammeter reads 0.50 A. The 5.0 Ω resistor is then replaced by an 11.0 Ω resistor (nothing else changes) and the ammeter reads 0.25 A. What are E and r?

More NEET Physics chapters

Practising is step one. Knowing what to practise next is the hard part.

Practising is step one. Knowing what to practise next is the hard part