Ammeter Voltmeter and Resistor

If the cell above has a potential difference of 8V, what is the potential difference across one bulb? Assume both bulbs are identical.

• 8V

• 4V

• 16V

• 2V

If the cell in the circuit above has a potential difference of 8V, what is the potential difference across one of the bulbs? Assume both bulbs are identical.

• 8V

• 4V

• 16V

• 2V

Look at figure 4. Ammeter A2 and A3 read the same value at 0.4Amps. What is the reading on Ammeter A1?

• 0.4A

• 0.2A

• 0.8A

• 0 A

Select all that apply.

• ammeters measure current in A

• ammeters measure voltage in V

• ammeters are connected in series

• ammeters are connected in parallel

• ammeters measure current in V

Select all that apply.

• voltmeters measure current in A

• voltmeters measure voltage in V

• voltmeters measure voltage in A

• voltmeters are connected in series

• voltmeters are connected in parallel

A voltmeter must have

• Low resistance so that it does affect the current through the main circuit

• High resistance so that it does affect the current through the resistor

• Low resistance so that it does affect the voltage across the resistor

Where would you place an ammeter in the circuit?

• Green ?

• Red ?

Where would you place a voltmeter in the circuit?

• Green ?

• Red ?

What is the relationship between the readings on Ammeters A1, A2 and A3

• A1 = A2 + A3

• A3 = A1 + A2

• A1 = A2 = A3

• A3 = A1-A2

What is the relationship between the readings on Ammeters A1, A2 and A3

• A1 = A2 + A3

• A3 = A1 + A2

• A1 = A2 = A3

• A3 = A1-A2