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Cells, EMF and Internal Resistance for NEET: 13 solved questions

Real NEET paper questions on cells, emf and internal resistance, part of current electricity. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 1988 to 2018. No sign-in needed to read them.

What this topic asks

• Terminal voltage and internal resistance — 8 questions
• Combination of cells — 5 questions

All 13 questions with solutions

• A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resis… NEET 2018
• The internal resistance of a 2.1 V cell which gives a current of 0.2 A through a resistance of 10 Ω is NEET 2013
• A cell having an emf ε and internal resistance r is connected across a variable external resistance R. As the… CBSE AIPMT 2012 Mains
• A current of 2 A flows through a 2 Ω resistor when connected across a battery. The same battery supplies a cu… CBSE AIPMT 2011
• A student measures the terminal potential difference (V) of a cell (of emf ε and internal resistance r) as a… CBSE AIPMT 2009
• For a cell terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is conn… CBSE AIPMT 2002
• A car battery of emf 12 V and internal resistance 5×10⁻² Ω, receives a current of 60 amp from external source… CBSE AIPMT 2000
• The internal resistance of a cell of e.m.f. 2 V is 0.1 Ω. It is connected to a resistance of 3.9 Ω. The volta… CBSE AIPMT 1999
• A battery consists of a variable number n of identical cells (having internal resistance r each) which are co… NEET 2018
• Ten identical cells connected in series are needed to heat a wire of length one meter and radius r by 10 in t… Karnataka NEET 2013
• Two cells, having the same e.m.f. are connected in series through an external resistance R. Cells have intern… CBSE AIPMT 2006
• Two batteries, one of emf 18 volts and internal resistance 2 Ω and the other of emf 12 volts and internal res… CBSE AIPMT 2005
• Two batteries of emf 4 V and 8 V with internal resistance 1 Ω and 2 Ω are connected in a circuit with resista… CBSE AIPMT 1988