Series & Parellel Circuits

A 9-volt battery is connected to a 4-ohm resistor and a 5-ohm resistor as shown in the diagram below. What is the current in the 5-ohm resistor?

• 1.0 A

• 1.8 A

• 2.4 A

• 4.0 A

In which circuit would ammeter A show the greatest current?

• 
• 
• 
• 

If switch S1 is open, the reading of ammeter A is

• 0.5

• 2.0

• 1.5

• 6.0

As the number of resistors in a parallel circuit is increased, what happens to the equivalent resistance of the circuit and total current in the circuit?

• Both equivalent resistance and total current

  decrease.

• Both equivalent resistance and total current

  increase.

• Equivalent resistance decreases and total current

  increases.

• Equivalent resistance increases and total current

  decreases.

What is the current reading of the ammeter?

• 1.0 A

• 0.60 A

• 0.40 A

• 0.20 A

In which circuit would current flow through resistor R1 but not through resistor R2 while switch S is open?

• 1

• 2

• 3

• 4

Which circuit diagram below correctly shows the connection of ammeter A and voltmeter V to measure the current through and potential difference across resistor R?

• 1

• 2

• 3

• 4

Which circuit has the smallest equivalent resistance?

• 1

• 2

• 3

• 4

What is the current measured by ammeter A?

• 0.50 A

• 2.0 A

• 72 A

• 4.0 A

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-3