a) what happens to the brightness of lamp 3?

 

b) does current in the circuit increase, decrease, or remain the same?

 

c) what happens to the brightness of lamps 1 and 2?

 

d) does the voltage drop across lamps 1 and 2 increase, decrease, or remain the same?

 

e) is the power dissipated by the circuit increased, decreased, or does it remain the same?