Question

plz solve it with explanation​

Answer 1

Answer:

1)we know that potential difference of

circular plate is =qk/r

for radius R1potantial difference(p.d)=q1*k/R1

q=VR1/k

for R2 p.d=q2*k/R2

q=VR2/k

so total charge qt=q+q

q=V(R1+R2)/2k

option 2 is correct i think

2)

v1=1.5*10^5k/1=1.5*10^-8v

V2=0.3*10^-7/2=1 .5*10^-8v

since potential is same so no charge flow takes place

so option 3 is right