MULTIPLE CHOICE. DIRECTIONS: Read each question carefully. Choose and write only the letter of correct answer on the answer sheet provided. A wire carries a current of 2.0 A. If 240 C of charge passes through the wire, how long did the current flow?

• 60 s

• 120 s

• 240 s

• 480 s

MULTIPLE CHOICE. DIRECTIONS: Read each question carefully. Choose and write only the letter of correct answer on the answer sheet provided. A student builds a circuit with a 9 V battery and a 3 Ω resistor. Using Ohm’s law, what is the current?

• 1 A

• 2 A

• 3 A

• 4 A

MULTIPLE CHOICE. DIRECTIONS: Read each question carefully. Choose and write only the letter of correct answer on the answer sheet provided. A. A dam storing water B. A container of water with no outlet C. A frozen lake D. A pipe allowing water to flow Which of the following best illustrates the concept of current as rate of flow of charge?

• A dam storing water

• A container of water with no outlet

• A frozen lake

• A pipe allowing water to flow

MULTIPLE CHOICE. DIRECTIONS: Read each question carefully. Choose and write only the letter of correct answer on the answer sheet provided. If a fuse is placed in a household circuit, its function is primarily to:

• Increase current

• Prevent overheating

• Reduce voltage

• Store energy

MULTIPLE CHOICE. DIRECTIONS: Read each question carefully. Choose and write only the letter of correct answer on the answer sheet provided. Which factor does not directly affect the current in a conductor?

• Resistance of the wire

• Temperature of conductor

• Type of battery

• Voltage applied

MULTIPLE CHOICE. DIRECTIONS: Read each question carefully. Choose and write only the letter of correct answer on the answer sheet provided. A student calculates the current in a 12 Ω resistor connected across a 24 V battery. What is the current?

• 1 A

• 2 A

• 3 A

• 4 A

A circuit has 0.5 A current. How much charge passes in 4 minutes?

• 60 C

• 100 C

• 120 C

• 240 C

If two resistors are connected in series with a 10 V battery, how does current behave?

• It decreases in each resistor

• It increases in each resistor

• It remains the same in both

• It stops completely

Current in metals is carried by__________.

• Electrons

• Ions

• Neutrons

• Protons