Question

Please give correct answers.
Best answer will be marked as the brainliest answer.​

Answer 1

potential difference of 9 V means that if the work done in moving 1 C of charge is 9 joule then, the potential difference is 9 V

W=QV

27=9Q

Q=3 C

time given is 1 minute i.e. 60 seconds

I=Q/t

I=3/60

I=1/20 A

V=IR

9=1/20*R

R=180 ohm hope it helps

:-)

Answer 2

Answer:

R = 180 ohm

Explanation:

time =1 min i.e 60sec

p=w/t

work= enery=27J

p=27/60sec=0.45w

also p=v^2/R

p=9×9/R

0.45w=81/R

i.e R = 81/0.45

=180 ohm

i guess it is the answer

Hope it helps u