# mcat physics?

#### synapse

##### Senior Member
10+ Year Member
7+ Year Member
When you purchase a 1.5V AA battery, the manufacturer guarantees that you have received a certain amount of ...
A. Electric field
B. Electric potential
C. Electric potential energy
D. Coulombs of charge

?? im stumped! ive been trying to figure this out forever

#### SamDC

##### Senior Member
10+ Year Member
synapse said:
When you purchase a 1.5V AA battery, the manufacturer guarantees that you have received a certain amount of ...
A. Electric field
B. Electric potential
C. Electric potential energy
D. Coulombs of charge

?? im stumped! ive been trying to figure this out forever
I'll narrow it down to two:

B. Electric potential
D. Coulombs of charge

and choose:

D. Coulombs of charge

A battery is like a capacitor. Thus, Q = CV, where C is the capacitance and is determined by the geometry and composition of the battery. So, if C is constant and V is initially 1.5 V, then Q will be a fixed amount that depletes over time.

#### i77ac

##### Senior Member
7+ Year Member
15+ Year Member
synapse said:
When you purchase a 1.5V AA battery, the manufacturer guarantees that you have received a certain amount of ...
A. Electric field
B. Electric potential
C. Electric potential energy
D. Coulombs of charge

?? im stumped! ive been trying to figure this out forever
voltage is a measurement of of electric potential, so my vote is B

#### sdnstud

##### 1K Member
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15+ Year Member
I second that

i77ac said:
voltage is a measurement of of electric potential, so my vote is B

#### internet

##### Member
10+ Year Member
5+ Year Member
the answer is B, a unit of voltage. how this is relevant to medicine i have no idea. but you must know it nonetheless. you must also be able to write a profound, insightful essay in 30 min. apparently doctors must be bloggers as well.

#### bobhagopian

##### Member
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5+ Year Member
You guys went for the easy answer. SamDC is the only one who has been correct thus far. A battery IS a capacitor. Also, it happens to be the case that there's a pretty wide range of voltages that actually appear on 1.5V batteries. What's always the same is the total charge that has been loaded onto the battery.

10+ Year Member
15+ Year Member
.

#### juniper456

##### Senior Member
10+ Year Member
5+ Year Member
bobhagopian said:
You guys went for the easy answer. SamDC is the only one who has been correct thus far. A battery IS a capacitor. Also, it happens to be the case that there's a pretty wide range of voltages that actually appear on 1.5V batteries. What's always the same is the total charge that has been loaded onto the battery.
great. i picked C. i'll never be a doctor

#### virilep

##### What can Brown do for u?
15+ Year Member
I got an idea.. how about choice

E. Post in the MCAT FORUM.

haha... just playin. the answer is D. (I'm a bio med engineering major) I promise!

#### alfredoconpollo

##### New Member
10+ Year Member
synapse said:
When you purchase a 1.5V AA battery, the manufacturer guarantees that you have received a certain amount of ...
A. Electric field
B. Electric potential
C. Electric potential energy
D. Coulombs of charge

?? im stumped! ive been trying to figure this out forever

hey synapse

you must be in dr. collins class at uci. im in his class and he just gave that question to us as a warmup prob. the answer's elec potential if you missed lecture this morning. anyways, g' luck with his class.