Question

Of the two bulbs in a house, one glows brighter than the other. Which of the two has a larger resistance?

• A. the bright bulb
• B. the dim bulb
• C. both have the same resistance
• D. the brightness does not depend upon the resistance.

Answer 1

The correct option is B the dim bulb

Answer is B.
We know that, V = IR, so for a fixed V, the less resistance, the more current. And Power = V*I says more current will consume more power, burn more brightly.
Hence, the dim bulb has the larger resistance.