The brightness of the bulb is determined by the amount of current flowing in the circuit.
Current, i = V/R
In bulb a, the resistance in the circuit is R.
Both batteries in the figure are identical and all light bulbs are the same. Rank in order, from brightest to least bright, the brightness of bulbs a to c.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Combining Resistors in Series & Parallel concept. You can view video lessons to learn Combining Resistors in Series & Parallel. Or if you need more Combining Resistors in Series & Parallel practice, you can also practice Combining Resistors in Series & Parallel practice problems.