Points: 4 Four light bulbs and a voltage source are connected as shown. Assume t

Question

Points: 4 Four light bulbs and a voltage source are connected as shown. Assume that the light bulbs behave like ohmic resistors, and that they are brighter the more current is passing through them. Consider the light bulb in the top left corner of the circuit What will happen if you cut the wire at position A? A. The light bulb will become brighter. B. The light bulb will have the same brightness. C. The light bulb will become dimmer, but not go off. D. The light bulb will go off. What will happen if you cut the wire at position B? A. The light bulb will become brighter B. The light bulb will have the same brightness. C. The light bulb will become dimmer, but not go off. D. The light bulb will go off What will happen if you cut the wire at position C? A. The light bulb will become brighter. B. The light bulb will have the same brightness. C. The light bulb will become dimmer, but not go off D. The light bulb will go off What will happen if you cut the wire at position D? A. The light bulb will become brighter B. The light bulb will have the same brightness. C. The light bulb will become dimmer, but not go off D. The light bulb will go off

Explanation / Answer

If the wire is cut at A, then the bulb goes off (D) as there is no closed path for the current to flow.

The light bulb will glow brighter since the entire current passes through the bulb. (A)

Bulb will get switched off as there is no closed path for the current to flow. (D)

The light bulb will become brighter as the net resistance decreases and net current increases (A)

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