Question

Electricity kinda theory part i guess

Answer 1

in q 34 i do get it why its not A or be or C
but i don't get how is it D

Answer 2

in q 35 i don't get why the graph has to look like A but not B

Answer 3

@thushananth01 @matt101 @No.name can you guys help me here? plzzz T_T

Answer 4

i mean i understand why its not A, B or C
but i don't get why its D
in q 34

Answer 5

u gotta remember dis grph

Answer 6

could u explain it??

Answer 7

I donno how to explain, but this graph is given in my writing book, and the power is maximum when R = r, no reasons as to why it is like that, but u can ask @Vincent-Lyon.Fr

Answer 8

@thushananth01 is correct.
Derivation is a bit more complicated.

Answer 9

yeah @Somy u dont need to know that, just remember that fact, its more than enough :

Answer 10

hmm im very bad at remembering things i do not understand but okay then

Answer 11

how about q 35?

Answer 12

When the current increases in the thermistor, the temperature inside the thermisotr increases, which means resitance shuld decrease, find the graph in which V/I decreases the (slope decreases) as I is increased

Answer 13

my q was why is it A not B

Answer 14

in B the slope is constant, which means resistance is constant, but resistance is not constant right, cuz it change as i explained

Answer 15

basically the change is in a same way, but its not exactly constant?

Answer 16

yep

Answer 17

okaaaaay thnx!!!!!!!!!!!