2ENA Chapter 13 Electrical Systems Part II

2ENA Chapter 13 Electrical Systems Part II

Fill in the Blank

An electric current is the amount of .................. ...................... moving past any point in the circuit per unit time.

Fill in the Blank

S.I unit for current is ....................

Fill in the Blank

Current flows from the positive terminal of a battery to the negative terminal. This is known as the ....................... .........................

Fill in the Blank

Electrons flows from the negative terminal of a battery to the positive terminal. This is known as the ....................... .........................

Multiple Choice

How does an ammeter is added in the circuit?

• Series

• Parallel

Multiple Choice

What does an ammeter measure?

• Current

• Voltage

• Resistance

Multiple Choice

Why is a battery important in an electrical circuit?

• As a source of energy.

• As a path for electricity to flow through.

• As a connector to connect all parts of a circuit.

Multiple Choice

How must a voltmeter be connected?

• In series

• In parallel

• To a power supply

Multiple Choice

Voltage is measured in __.

• volts.
• watts.
• coulombs. 

Multiple Choice

What is the function of a cell?

• A conductor that connect the components together.

• A method of opening or closing the circuit.

• A source of electromotive force that drives electric charges around the circuit.

• A load in which moving charges can do a useful job.

Multiple Choice

The circuit diagram above represents four resistors connected to a 12-volt source. What is the total current in the circuit?

• 2.0 A

• 0.50 A

• 24 A

• 8.6 A

Multiple Choice

What is a benefit of using a parallel circuit?  

• It gets confusing.
• There are no problems.
• If one light goes out, it does not affect the others. 
• If one light goes out, they all go out. 

Multiple Choice

What is one problem with using a series circuit? 

• It has a lot of series. 
• If one light goes down, they all go down! 
• It doesn't work properly.
• There are no problems. 

Multiple Choice

A series circuit has how many pathways for the electrons to flow?

• Two
• One
• Many
• Zero

Multiple Choice

The total current going through the battery of this circuit is

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

Multiple Choice

The current going through the 45 ohm resistor is 

• 0.05 amps
• 0.2 amps
• 0.1 amps
• 5 amps

Multiple Choice

The total current through this circuit is

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

Multiple Choice

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

Multiple Select

Find the voltmeter reading shown in diagrams below.

• 2 V , 2 V

• 1 V , 3 V

• 0 V , 0 V

• 4 V , 2 V

Multiple Choice

Find the voltmeter reading shown in diagrams below.

• 1 V

• 3 V

• 2 V

• 4 V

Multiple Choice

Find the voltmeter reading shown in diagrams below.

• 6 V

• 2 V

• 4 V

• 8 V

Multiple Choice

Find the voltmeter reading shown in diagrams below.

• 5 V

• 3 V

• 2 V

• 7 V

Multiple Choice

Find the voltmeter reading shown in diagrams below.

• 1 V

• 3 V

• 10 V

• 30 V

Multiple Choice

In a parallel circuit which of the following is the same value throughout the circuit?

• Voltage
• Current
• Resistance
• Charge

Multiple Choice

The voltage dropped across the 300 ohm resistor is 

• 6 V
• 9 V
• 2 V
• 30 V

Multiple Choice

• A₂ = A₃

• A₂ + A₃ = A₁

• A₁ + A₂ = A₃

• A₄ = A₂ - A₃