Explain why the bulb connected to two dry cells lights up brighter than one bulb connected to one dry cell?

1
because voltan yg digunakan adalah lbh tinggi.
voltage is higher when you use two dry cells. [ V=IR ] When V increases, I increases, thus brightness increases.
Komen telah dipadam

Jawapan

2014-07-01T13:08:44+08:00
Brightness depends on the Power (P=IV).

One dry cell = 1.5V
Two dry cells = 3 V

Since the voltage is higher with two dry cells and current is the same (cuz' series circuit), hence P has a bigger value and the bulb is brighter. MORE POWER! :D