What happens to the brightness of bulb A? View Available Hint(s) What happens to the brightness of bulb A? It gets dimmer. It gets brighter. There is no change.

Answer / Explanation:

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The light bulbs in the circuit diagram as shown below are identical. What happens  to the brightness of bulb A when the switch is closed?

a) both bulbs go out

b) the intensity of both bulbs increases

c) the intensity of both bulbs decreases

d) nothing changes

Before switch closed: Va = 12V because of  battery. Vb = 12 because equal resistance  divides 24V in half.  After switch closed: Nothing changes  since (a) and (b) are still at same potential

Therefore, the answer is (D), nothing changes. That is, there is no change.

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.