Question

When two identical cells are connected either in series or in parallel
across a 4 ohm resistor, they send the same current through it. The
internal resistance of the cell in ohm is
(1)1.2
(2)2
(3)4
(4)4.8​

Answer 1

Answer:

4

Explanation:

R1=R2=4 ohm

V=200v

I = V / R

I = 220 / 4 = 55 A

TOTAL RESISTANCE

R= V/I

=220/55

=4 ohm