JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Medium

1 of 1

Analyzing +4 | -1

Two non-ideal batteries are connected in parallel. Consider the following statements.

(i) The equivalent emf is smaller than either of the two emfs.

(ii) The equivalent internal resistance is smaller than either of the two internal resistances.

View answer and explanation

Correct option: C

(ii) is correct but (i) is wrong

Option C is correct because in a parallel combination of non-ideal batteries, the equivalent EMF is not necessarily smaller than either of the two EMFs, but the equivalent internal resistance is smaller.

More Questions from CURRENT ELECTRICITY

Practice All Chapter MCQs →

The specific resistance of a wire is

\mathrm{\rho }

, its volume is

3\,\,{\mathrm{m}^3}

and its resistance is

3\,\,\mathrm{\Omega }

, then its length will be Magnitude of drift velocity per unit electric field is Statement-1: If a resistor is connected to a battery the current decreases when the temperature increases.
Statement-2: For most of the resistors, resistance increases with increase in temperature. The reciprocal of resistance is Corresponding to the resistance

4.7\,\, \times \,\,{10^6}\,\,\mathrm{\Omega }\,\, \pm \,\,5\,\,\%

, which is order of colour coding on carbon resistors? In a meter bridge, the gaps are closed by resistance 2 and 3 ohms. The value of shunt to be added to 3 ohm resistor to shift the balancing point by

22.5\,cm