During an experiment a learner connects these two bulbs X and Y in series to the same power supply. he observes that bulb X now glows. USE AN APPROPRIATE EQUATION OR RELATIONSHIP TO EXPLAIN WHY BULB X NOW GLOWS BRIGHTER THAN BULB Y.
To explain why bulb X now glows brighter than bulb Y when connected in series to the same power supply, we need to consider the relationship between the bulb's brightness (intensity) and the current passing through them.
Bulbs in series share the same current flowing through them. According to Ohm's Law, the current passing through a circuit element (in this case, bulbs X and Y) is directly proportional to the potential difference (voltage) across that element and inversely proportional to its resistance. The equation representing Ohm's Law is:
I = V / R
Where:
- I is the current
- V is the potential difference (voltage)
- R is the resistance
When bulbs X and Y are connected in series to the same power supply, they have the same voltage applied to them since they are connected in the same circuit. However, the bulbs can have different resistances, which affects the current passing through them.
Assuming that bulb X has a lower resistance compared to bulb Y, according to Ohm's Law, a lower resistance would result in a higher current. Therefore, bulb X will glow brighter than bulb Y because it is receiving a higher current.
Hence, the appropriate equation or relationship to explain why bulb X now glows brighter than bulb Y when connected in series is Ohm's Law: I = V / R.