M.3 1-1 Midterm F.Science Review

Why does an atom have no net electric charge?

• Its subatomic particles carry no electrical charge.
• The positively charged protons cancel out the negatively charged neutrons.
• The positively charged neutrons cancel out the negatively charged electrons.
• The positively charged protons cancel out the negatively charged electrons.

If a circuit is open, does it waste electricity?

• No, since the circuit is open, no electricity is flowing.
• Yes, since the circuit is open, no electricity is flowing.
• No, since the circuit is closed, no electricity is flowing.
• Yes, since the circuit is open, electricity is flowing.

A path for electricity is ……………...

• circuit
• a light bulb
• amper
• route

…………occurs when electric charges build up on objects, such as when materials are pulled apart orrubbed together, causing positive (+) charges to collect on one material and negative (−) charges on the other surface.

• Capacitance
• magnetism
• dynamic electricity
• static electricity

A light bulb with resistance of 2 ohms is connected to a 4-V battery. What is the current flowing through the circuit?

• 0.5 A
• 5 A
• 2 A
• 1 A

The amount of energy per Coulomb of charge in a circuit is determined by what property?

• Current
• Voltage
• Resistance
• Power

If you increase the resistance in a series circuit ……………………………, .

• the current will also increase
• the voltage will increase
• the current will decrease
• the voltage will decrease

Which of the following always remains constant on a series circuit?

• current
• resistance
• voltage
• power

Look at the drawing. If the voltage is 6 volts and each resistor is 2 Ohms, what is the total resistance of the circuit?

• 3 Ohms

• 0 Ohms

• 1 Ohm

• 6 Ohms

The total amount of energy delivered every second to a resistor is a measure of…........

• Power.
• Current.
• Resistance.
• Volts