Question

Elaine drew an electric circuit diagram that includes a door buzzer. But the current in the circuit is too high based on the parts she chose. Which part can Elaine add to lower the flow of current without changing the operation of the circuit?
A.
a lightbulb
B.
a motor
C.
a resistor
D.
a second battery

Answer 1

second battery because the 5V battery is connected to two `20 Omega` resistors which are joined together in series.