1. Electricity flows and the bulbs Eght up when the switch is A off B. on C. broken D. taken 2 When fewer bulbs are used in a circuit the brightness of each bub A increases B. decreases C. disappears D. none of the above 3. F the other end of the wize is not properly comected to the negative end of the battery. the bul - A will not light B. glows dim C. Tại D. glows bright 4. A simple circuit has a long-coded wire. 15 volts and a bulb. Wiry does the bulbo get dimmer? A because the power supply is not enough to light the bub brightly B. because the load is too many C. because the wire is too long D. because the wire is too short5. 5. Imagine a circuit with a 1.5-volt battery and a build and a similar circuit with a 3-volt battery and two bulbs. Which has the brighter glow? A The circuit with 15-voit battery and a bub. B. The circuit with 3-volt battery and two bulbs. C. The bubs in both circuits are similar brightness levels. D. The bulbs in both circuits will not 6. Why might a bub have busted when 3 pieces with 3 volts each are al connected across a simple crcuit? A There is insufficient amount of electricity flowing in the circuit B. Too much electricity flows through the bub's filament and the bub blows. C. The batteries are not connected properly. D. The batteries are used p or uncharged. 7. What is the effect of changing the wre in a circuit from a straight short wire to a longer coled track wize? A The bulbs become dimmer. B. The bulbs become brighter. C. The bulbs stay at the same level of brightness D. Nothing has changed. 8. What needs to be done to this circuit so that the lamp lights up? A Close the switch B. Add another bulb or lamp. C. Add another wire. D. Add a battery and close the switch 9. The switch is off. What happens to the bulb? A The bulb lights. B. The bulb is busted C. The bub doesn't light D. The bulb breaks. 10. More bulbs are added to a simple circuit What happens? A The bulbs glows dirmer. B. The bulbs will be busted. C. The bulbs glow brighter. D. The bulbs will break​