Question

1) What are the directions of the electric field lines of the experimental configuration?

3) According to Ohm

Answer 1

1) Electric field lines moved from the positive charge to infinity. They move towards the negative charge if any.

2)

a) current is directly proprotional to voltage

this mean when voltage increases, current also increases keeping resistance constant.

b) Voltage is directly proportioanl to resistance

Greater the resistance, higher would be the voltage when current is constant

c) current is inversely proportional to resistance.

When current increases, resistance decreases keeping the voltage constant.

d) I = V / R

      = 10 / (10x10⁶ ohms)

      = 1x10^-6 A

      = 1uA (micro amp)