A light bulb has a resistance of 10 ohms when it is hot. A 10-ohm resistor is placed in parallel with the bulb. What is the total resistance of the circuit?
Q1. A light bulb has a resistance of 10 ohms when it is hot. A 10-ohm resistor is placed in parallel with the bulb. What is the total resistance of the circuit?
Answer: 5 ohms
Explanation: The total resistance in a parallel circuit decreases, making the total resistance 5 ohms, which is the resistance of the parallel combination.