Question

The voltage V in volts produced by a battery is a linear function of the i in amperes drawn from it .The opposite of the slope of the line repesents the battery 's effective resistance R in ohms .For a certain battery ,
V=12.0 when i = 10.0
a) What is the effective resistance of the battery ?
b) Find the voltage that the battery would producfe when the current is 25.0 amperes.

Answer 1

key:
a)=0.4 ohm
b)=2.4 volts

Answer 2

is that the answer there? a) r=0.4 ohm and v=2.4volts?

Answer 3

yes

Answer 4

ok let me fig out something

Answer 5

ty

Answer 6

mark.0 did you fig yet?

Answer 7

my answer is just 2volts not 2.4 volts

Answer 8

I now a)=
(12-8.4)/(1.0-10.0)
3.6/9=0.4 ohm
I can't fig b)

Answer 9

a) = find slope

Answer 10

25x .4 =10v
12-10=2volts only

Answer 11

thank, I try many way , I plug 25 for x , 25 for y
but not macth, may be book is wrong answer, I will try repost to see if some have difference answer

Answer 12

ok,,,,good luck cali ....

Answer 13

t mark o.

Answer 14

ywc