FIGURE 26-1
-Fig. 26-1 shows three identical lightbulbs connected to a battery. What happens to the brightness of lightbulb 1 when the switch S is closed?
A)The brightness will increase momentarily then return to its previous level.
B)The brightness increases.
C)The brightness will decrease momentarily then return to its previous level.
D)The brightness remains the same as before the switch is closed.
E)The brightness decreases.

Question

FIGURE 26-1 
-Fig. 26-1 shows three identical lightbulbs connected to a battery. What happens to the brightness of lightbulb 1 when the switch S is closed?
A)The brightness will increase momentarily then return to its previous level. 
B)The brightness increases. 
C)The brightness will decrease momentarily then return to its previous level. 
D)The brightness remains the same as before the switch is closed. 
E)The brightness decreases.

Quizplus · Accepted Answer

When the switch is closed, the current in the circuit increases, which causes the brightness of the lightbulbs to increase.

FIGURE 26-1 -Fig. 26-1 Shows Three Identical Lightbulbs Connected to a Battery