Question

a) If an electric lamp draws 500 mA with voltage of 2.5 V, calculate the resistance of the lamp.
b) write any two advantages of parallel connection over series connection.

Answer 1

Answer:

a) 500 mA = 0.5A

    R = V/I

       = 2.5/0.5

       = 5 Ω    

b) i) In a parallel connection, even if one component stops working, the other components will work. But if one component stops working in a series connection, the other components will stop working.

ii) The current flows equally to all the components, which will not happen in a series connection.