Consider the circuit given below:

What is the equivalent internal resistance ?
Answer & explanation
Correct answer: option 1
$\text{All the resistors are in series } R_{eq} = R_1 +R_2 +R_3+ R_4 = 0.4V$
Consider the circuit given below:

What is the equivalent internal resistance ?
Correct answer: option 1
$\text{All the resistors are in series } R_{eq} = R_1 +R_2 +R_3+ R_4 = 0.4V$