What is the current flowing through the 20-ohm resistor? A. 1 A
B. 2 A
C. 3 A
D. 4 A

2. What happens to the current in a series circuit if the resistance is doubled?

A. It becomes half its original value.
B. It becomes double its original value.
C. It becomes zero.
D. It does not change.

3. A series circuit is constructed with a battery, a light bulb, and a resistor. What happens if the resistor is removed from the circuit?

E. The current increases and the bulb’s light becomes dimmer.
F. The current increases and the bulb’s light becomes brighter.
G. The current decreases and the bulb’s light becomes dimmer.
H. The current decreases and the bulb’s light becomes brighter.