AST111 Review-Test

Name ( Last Name, First Name)

In a circuit branch, 4 A enters and splits into 1.5 A and another branch. How much current flows in the second branch?

• 1.5 A
• 2.5 A
• 3.5 A
• 4.0 A

A 9 V battery causes 3 A current through a resistor. When another resistor is added in series, total current becomes 2 A. What is the added resistance?

• 1.5 Ω
• 2 Ω
• 3 Ω
• 1 Ω

A circuit has 2 A through a 6 Ω resistor. Voltage across it is:

• 3 V
• 12 V
• 6 V
• 24 V

Two resistors (6 Ω and 3 Ω) are connected in parallel. What is the equivalent resistance?

• 2 Ω
• 9 Ω
• 4 Ω
• 18 Ω

A 12 V battery supplies current through a 4 Ω resistor. If another 4 Ω resistor is added in series, how does the current change?

• Doubles
• Halves
• Becomes ⅔
• Stays the same

Adding resistors in series decreases the total resistance.

• True
• False

In a parallel circuit, voltage across all branches is equal.

• True
• False

According to Kirchhoff"s Law, current entering a junction equals current leaving.

• True
• False

In scientific notation, 1.23×10^-3 is greater than 1.23×10^-2

• True
• False