I would say photosynthesis but the question is a bit dull

**Answer:**

**Explanation:**

It is given that,

Voltage of the battery, V = 1.5 V

Internal resistance of battery 1,

Internal resistance of battery 2,

Current flowing in the lamp,

Total internal resistance of tow batteries,

**Let R is the resistance of the bulb. Let V is the total emf of the circuit. It is given by :**

**So, the resistance of the bulb is 4.54 ohms. Hence, this is the required solution.**

**Answer:**

40M/S

**Explanation:**

BY CALCULATION USING THE FORMULA S=FD