PHYSICS LEVEL 10 UNIT 19 PG

Which statement about electric curent is correct?

• It always flows clockwise

• It gets used as it goes around the circuit

• It flow in many directions at the same time

• It always flows from the point where the electrical potential is highest to the point where it is lowest

What unit is used to measure current?

• Ohms

• Omega

• Volts

• Amps

What unit is used to measure resistance?

• Ohms

• Omega

• Volts

• Amps

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

• 1/4 A

• 144 A

• 4 A

• 0.4 A

If a circuit had 4 D-Cell batteries (each 1.5 V) in series and a lightbulb with resistance of 2 ohms, what is the current that flows through the circuit?

• 2 A

• 3 A

• 6 A

• 8 A

The total current through this circuit is ______

• 0.02 amps
• 0.09 amps
• 50 amps
• 9 amps

What is the total resistance (RT) across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

The total resistance of this circuit is _______

• 25.7 ohms
• 315 ohms
• 324 ohms
• 90 ohms

The total current going through the battery of this circuit is ______

• 0.35 amps
• 0.0286 amps
• 0 amps
• 9 amps

Suppose you have a 100 Ω resistor parallel to two 100 Ω resistors in series. what is their total resistance?

• 66.7 Ω

• 300 Ω

• 69.69 Ω

• 600 Ω