Electricity Flashcards
Circuit P is arranged in series and Circuit Q is arranged in parallel. They both have two bulbs and one battery. In which circuit are the bulbs brighter. Explain.
In circuit Q. In circuit Q, the bulbs are in parallel arrangement so there is more electric current flowing through each bulb. in circuit P, the bulbs are in series arrangement so there is less electric current flowing through each bulb.
Circuit A is a parallel arrangement while Circuit B is a series arrangement. What is the advantage of using circuit A instead of circuit B to connect the heating elements to the car battery. Explain why
If one of the heating elements breaks, the other heating elements can still work in Circuit A but not in Circuit B. Circuit A is arranged in parallel so there is still a closed circuit for the electric current to run through the heating element.
Explain why when one bulb fuses in a parallel arrangement, the other bulb(s) remain lit.
The bulbs are in a parallel arrangement. When one of the bulbs fuses, there is still a closed circuit for the electric current to flow through the other bulb(s)
Can a bulb light up if the arm of the switch in the circuit is made of plastic? Explain your answer
No. Plastic is not a conductor of electricity, so when the switch is closed, it is still an open circuit. Thus the electric current can not flow through the bulb and light it up.
A wet towel is placed on a chair with 3 fans switched on. Which arrangement of the fans, in series or parallel, will help the towel dry faster? Explain your answer.
Parallel arrangement. When the fans are arranged in parallel to one another, the amount of electricity flowing through them is greater than when they are connected in series. The fans can spin at a greater speed. Thus the rate of evaporation from the wet towel increases.
An circuit was set up with one bulb. As the number of batteries increased to 5, the brightness of the bulb increased. When the 6 battery was added, the bulb did not light up. Why? Explain your answer?
The bulb fused. Too much electric current was flowing through the filament, causing it to heat up and melt, breaking the circuit. Thus the electric current can not flow through the bulb to light it up.
