Answer to Question #279064 in Electric Circuits for Kadijah

Question

The rate at which charge flows through a series circuit is inversely proportional to the amount of overall resistance in the circuit. Based on the results in Experiment 2, which one of the following rules accurately describes the effect of the number of bulbs upon overall current and overall resistance?

a. Increasing the number of bulbs will cause both the current and the resistance to increase. b. Increasing the number of bulbs will cause both the current and the resistance to decrease. c. Increasing the number of bulbs will cause the current to increase and the resistance to

decrease.

d. Increasing the number of bulbs will cause the current to decrease and the resistance to

increase.

Answer 1

Light bulbs contain a filament that has some resistance.

When bulbs are arranged in series in a circuit, the more the bulbs the higher the resistance they introduce in the circuit.

Current is inversely proportional to the amount of overall resistance in a circuit.

Therefore, the more the number of bulbs the lower the current in the circuit

Option (d) accurately describes the effect of the number of bulbs upon overall current and overall resistance.

That increasing the number of bulbs will cause the current to decrease and the resistance to increase in a series circuit.