Question

Numericals (Equations : Q=ne
1=Q/t
V=W/Q)
1.A steady current of 5 amperes flows through a circuit for 30 minutes.
How much charge has circulated through the circuit in this time?
2.One billion electrons pass from a point ‘A’ towards another point 'B'
in 1/10000 of a second. What is the current in amperes? What is the
direction of current?
3.Calculate the current in a wire if 1500 C of charge is passed through it
in 5 minutes.
4.A polythene piece is rubbed with wool. It is found to acquire a
negative charge of 3X 10 -7 C. Estimate the number of electrons
transferred to the polythene piece.





Can anyone solve an part of the 4 questions and send it to me,if you want to become the brainliest

Answer 1

Explanation:

1) - I=5A. T=30min.=180sec.

Q= IT

= 5×180=900C

2) - e= 1.6×10^(-19)

n= 100000000

t=1/10000

I= ne/t

= 1.6×10^(-19) × 10^(12)

= 1.6×10^(-7) A. From A to B opp. to flow of electrons

3) - Q=1500 C

t= 5min.=300sec.

I=Q/t

= 1500/300= 5A

4) - Q= ne

Q= 3×10^(-7)C

e= 1.6×10^(-19)

n= Q/e

= 1.8× 10^(12) electrons are transferred to. polythene piece.

Answer 2

Answer:

1. I =5A, T=30 min =180 sec

Q=IT

=5×180

=900C