Question

The current in a conductor varies with time t as I=2-0.02t ampers. The electric charge that passes from t=0 to t=100 sec is

Answer 1

Answer:

we have,

current = 2 - 0.02t amphere

time (t1) = 0 sec

t2 = 100sec

since , we know that

I = q/t

in first case

I = 2 - 0.02t1 = 2 - 0.02*0 = 2 amphere

therefore

2 = charge/ 0 # 2 (undefined)

in second case

I = 2 - 0.02*100 = 2-2 = 0 amphere

therefore,

I = q/t

0 = q/100

q = 0 c