(a) Describe the physics of lightening and a method to protect your house from lightening.
(b) How do you protect sensitive electric circuits and chips from external electric fields?
(a)Two long parallel wires are separated by 10cm, and each carries 10A current in the same direction. Calculate the force between the wires per unit length.
(b) what would be the force (magnitude and direction) if the current flows in opposite directions in these two wires?
5.(a) Describe the physics of lightening and a method to protect your house from lightening. (10)
(b) How do you protect sensitive electric circuits and chips from external electric fields? (5) [15]
6. (a)Two long parallel wires are separated by 10 cm, and each carries 10 A current in the same direction. Calculate the force between the wires per unit length. (10) (b) what would be the force (magnitude and direction) if the current flows in opposite directions in these two wires? (3) [13]