a circuit contains two lamps connected in series. what would happen to the brightness of each lamp if two…

Brief Explanations:

In a series - connected circuit, the total resistance increases when more resistors (lamps here) are added. According to Ohm's law ($I=\frac{V}{R}$), with the voltage source remaining constant, an increase in total resistance leads to a decrease in current. The power dissipated in a lamp is given by $P = I^{2}R$. Since the current through each lamp decreases and the resistance of each lamp remains the same (assuming the lamps' resistance doesn't change with current), the power dissipated in each lamp decreases. As brightness is related to power dissipated, the brightness of each lamp decreases.

Answer:

The brightness of each lamp would decrease.