A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be
if another resistor (with a resistance of 7.5 ohms) is added to the circuit? A.increase; 0.51 amps
B.increase; 0.72 amps
C.increase; 3.6 amps
D.decrease; 0.51 amps
E.decrease; 0.72 amps
When zinc is added to copper sulphate (CUSO4) solution due to more reactivity of zinc, cooper is replaced by the zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless.
