Consider the circuit above, which has three light bulbs (labelled D, F, and E),
ID: 2027579 • Letter: C
Question
Consider the circuit above, which has three light bulbs (labelled D, F, and E), a battery, and wires. Assume that the light bulbs behave like ohmic resistors, and that they are brighter the more current is passing through them. Ignore that all bulbs are drawn equally bright in the diagram.
Which one of the following is true if no wires are cut?
Bulbs E and F are off.
All bulbs are equally bright.
Bulbs D and F are dimmer than bulb E, but not off.
Bulb E is dimmer than the other two, but not off.
Bulb E is off.
Consider the following scenarios separately, i.e., only one wire is cut at a time.
What would happen after cutting the wire at B?
Bulb F becomes brighter.
All bulbs become brighter.
Nothing happens.
Bulb D goes off.
All bulbs become dimmer.
Bulb F becomes dimmer, but does not go off.
Explanation / Answer
Consider the circuit above, which has three light bulbs (labelled D, F, and E), a battery, and wires. Assume that the light bulbs behave like ohmic resistors, and that they are brighter the more current is passing through them. Ignore that all bulbs are drawn equally bright in the diagram.
Bulb E is off.
What would happen after cutting the wire at B?
All bulbs become dimmer
What would happen after cutting the wire at G?
Bulb D goes off (I actually disagree with all responses, all lights would be off)
What would happen after cutting the wire at A?
Nothing happens
What would happen after cutting the wire at C?
Nothing happens ((I actually disagree with all responses, all lights would be off. But based on answer on what happens above when wire cut a G, this is the response they are looking for)