Question

In the circuit below, the battery maintains a constant potential difference between the terminals, points 1 and 2. The three light bulbs A, B, and C are identical. 1) How do the brightnesses of the three bulbs compare to each other (circle one)? a) A is brightest, B is second brightest, C is dimmest b) A is brightest, B is dimmest, C is second brightest c) A is brightest, B and C are dimmer than A, but B and C are equal to each other in brightness d) A is dimmest, B is brightest and C is second brightest e) A is dimmest, B is second brightest and C is brightest f) A is dimmest, B and C are brighter than A, but B and C are equal to each other in brightness g) All three bulbs are equal in brightness 2) What happens to the brightness of bulb B when A is unscrewed and removed (circle one)? a) B brightness stays the same b) B gets brighter c) B gets dimmer 3) What happens to the current through point 5 when A is unscrewed and removed (circle one)? a) current increases b) current decreases c) current stays the same 4) What happens to the current through point 4 when A is unscrewed and removed (circle one)? a) current increases b) current decreases c) current stays the same 5) What happens to the current through point 4 when C is unscrewed and removed (circle one)? a) current increases b) current decreases c) current stays the same 6) What happens to the current through point 5 when C is unscrewed and removed (circle one)? a) current increases b) current decreases c) current stays the same

          In the circuit below, the battery maintains a constant potential difference between the
terminals, points 1 and 2. The three light bulbs A, B, and C are identical.

1) How do the brightnesses of the three bulbs compare to each other (circle one)?
a) A is brightest, B is second brightest, C is dimmest
b) A is brightest, B is dimmest, C is second brightest
c) A is brightest, B and C are dimmer than A, but B and C are equal to each other in brightness
d) A is dimmest, B is brightest and C is second brightest
e) A is dimmest, B is second brightest and C is brightest
f) A is dimmest, B and C are brighter than A, but B and C are equal to each other in brightness
g) All three bulbs are equal in brightness
2) What happens to the brightness of bulb B when A is unscrewed and removed (circle one)?
a) B brightness stays the same b) B gets brighter c) B gets dimmer
3) What happens to the current through point 5 when A is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same
4) What happens to the current through point 4 when A is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same
5) What happens to the current through point 4 when C is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same
6) What happens to the current through point 5 when C is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same

In the circuit below, the battery maintains a constant potential difference between the
terminals, points 1 and 2. The three light bulbs A, B, and C are identical.

1) How do the brightnesses of the three bulbs compare to each other (circle one)?
a) A is brightest, B is second brightest, C is dimmest
b) A is brightest, B is dimmest, C is second brightest
c) A is brightest, B and C are dimmer than A, but B and C are equal to each other in brightness
d) A is dimmest, B is brightest and C is second brightest
e) A is dimmest, B is second brightest and C is brightest
f) A is dimmest, B and C are brighter than A, but B and C are equal to each other in brightness
g) All three bulbs are equal in brightness
2) What happens to the brightness of bulb B when A is unscrewed and removed (circle one)?
a) B brightness stays the same b) B gets brighter c) B gets dimmer
3) What happens to the current through point 5 when A is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same
4) What happens to the current through point 4 when A is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same
5) What happens to the current through point 4 when C is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same
6) What happens to the current through point 5 when C is unscrewed and removed (circle
one)?
a) current increases b) current decreases c) current stays the same

Added by Robin R.

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