Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

Two cells of emf E and 2E with internal resistances r and 3r, respectively are connected in parallel. The emf and internal resistance of the combination is:

Options:

$\frac{4}{3}E,\frac{2}{3}r$

$\frac{1}{4}E,\frac{3}{2}r$

$\frac{5}{4}E,\frac{3}{4}r$

$\frac{2}{3}E,\frac{1}{2}r$

Correct Answer:

$\frac{5}{4}E,\frac{3}{4}r$

Explanation:

The correct answer is Option (3) → $\frac{5}{4}E,\frac{3}{4}r$