k12 Physics Unit 8 Q&A
Which of the following statements about the pictured circuit is correct? (closed circuit) -
(correct answer)Electrons flow from teh negative terminal to the positive terminal
Which of the following is equivalent to one ampere? - (correct answer)1.5 C / 1.5 s
A stream of moving charges results in a current of 5.6 A. How long does 116 C of
charge take to flow past a fixed point? - (correct answer)21 s
How much power does a radio use if a 12.0 V battery supplies 2.0 A of current? -
(correct answer)24 W
Which of the following is a reasonable power rating on an electric oven? - (correct
answer)10.0 kW
Which of the following is required for electric current to flow? - (correct answer)battery
and copper wire
This symbol represents which of the following electric components? - (correct
answer)capacitor
When a 20 V battery is hooked up to a 10 Ω resistor in a circuit, how much current flows
through the circuit? - (correct answer)2 A
What does a capacitor do in a circuit? - (correct answer)It stores charge
Which of the following statements best describes the circuit shown? (A circuit diagram
that goes in a rectangular loop with symbols connected in the following way. Symbol 1.
A negative sign and a positive sign separated by a small gap. The wire leaves the top
positive sign end of the symbol and continues until it connects to symbol 2, a hinge that
could open and close. The hinge is open. The wire continues and connects to symbol 3,
, a zigzag that is an unbroken continuation of the wire. The wire turns and connects to
symbol 4, a second zigzag symbol. The wire continues and is connected to symbol 5, a
third zigzag symbol. The wire continues and connects to symbol 6, two short lines
perpendicular to the wire and separated from each other by a small gap. The wire
continues and returns to the negative side of symbol one. ) - (correct answer)A battery
is hooked in a series to three resistors, one capacitor, and a switch
If a 0.375 A of current moves across the resistor shown, then what is the value of the
resistor? ( A circuit diagram with a resistor and a battery symbol with delta v equals 1.5
volts. The circuit diagram is a rectangle with the battery symbol on top. A line leaves the
negative side of the battery and connects to a resistor at the bottom of the rectangle and
then the line returns to the negative side of the battery. ) - (correct answer)4.0 Ω
When 2.0 A of current moves across a 1.0 MΩ resistor, then what is the drop in voltage
open parentheses delta V close parentheses across the resistor? - (correct answer)2.0
x 10^6 V
What will happen to the brightness of a string of bulbs hooked up in series when you
increase the number of bulbs in the string? - (correct answer)Each light in the string will
get dimmer
How are the elements in this circuit arranged? (A circuit diagram with symbols on all
four sides. The symbols are on the rectangle and connected in the following way. On the
top side, a negative sign and a positive sign separated by a small gap. The line
continues to make the right side of the rectangle and connects to a zigzag symbol. The
line turns and continues to make the bottom side of the diagram and connects to a
second zigzag symbol. The line takes a turn to the left side of the rectangle and
connects a third zigzag symbol. The line continues and connects to the left negative
side of the negative positive symbol where it started.) - (correct answer)Series
A 45 V battery is connected to a 10.0 Ω resistor and a 5.0 Ω resistor in series. What will
be the total current in the circuit? - (correct answer)3.0 A
Which of the following statements about the pictured circuit is correct? (closed circuit) -
(correct answer)Electrons flow from teh negative terminal to the positive terminal
Which of the following is equivalent to one ampere? - (correct answer)1.5 C / 1.5 s
A stream of moving charges results in a current of 5.6 A. How long does 116 C of
charge take to flow past a fixed point? - (correct answer)21 s
How much power does a radio use if a 12.0 V battery supplies 2.0 A of current? -
(correct answer)24 W
Which of the following is a reasonable power rating on an electric oven? - (correct
answer)10.0 kW
Which of the following is required for electric current to flow? - (correct answer)battery
and copper wire
This symbol represents which of the following electric components? - (correct
answer)capacitor
When a 20 V battery is hooked up to a 10 Ω resistor in a circuit, how much current flows
through the circuit? - (correct answer)2 A
What does a capacitor do in a circuit? - (correct answer)It stores charge
Which of the following statements best describes the circuit shown? (A circuit diagram
that goes in a rectangular loop with symbols connected in the following way. Symbol 1.
A negative sign and a positive sign separated by a small gap. The wire leaves the top
positive sign end of the symbol and continues until it connects to symbol 2, a hinge that
could open and close. The hinge is open. The wire continues and connects to symbol 3,
, a zigzag that is an unbroken continuation of the wire. The wire turns and connects to
symbol 4, a second zigzag symbol. The wire continues and is connected to symbol 5, a
third zigzag symbol. The wire continues and connects to symbol 6, two short lines
perpendicular to the wire and separated from each other by a small gap. The wire
continues and returns to the negative side of symbol one. ) - (correct answer)A battery
is hooked in a series to three resistors, one capacitor, and a switch
If a 0.375 A of current moves across the resistor shown, then what is the value of the
resistor? ( A circuit diagram with a resistor and a battery symbol with delta v equals 1.5
volts. The circuit diagram is a rectangle with the battery symbol on top. A line leaves the
negative side of the battery and connects to a resistor at the bottom of the rectangle and
then the line returns to the negative side of the battery. ) - (correct answer)4.0 Ω
When 2.0 A of current moves across a 1.0 MΩ resistor, then what is the drop in voltage
open parentheses delta V close parentheses across the resistor? - (correct answer)2.0
x 10^6 V
What will happen to the brightness of a string of bulbs hooked up in series when you
increase the number of bulbs in the string? - (correct answer)Each light in the string will
get dimmer
How are the elements in this circuit arranged? (A circuit diagram with symbols on all
four sides. The symbols are on the rectangle and connected in the following way. On the
top side, a negative sign and a positive sign separated by a small gap. The line
continues to make the right side of the rectangle and connects to a zigzag symbol. The
line turns and continues to make the bottom side of the diagram and connects to a
second zigzag symbol. The line takes a turn to the left side of the rectangle and
connects a third zigzag symbol. The line continues and connects to the left negative
side of the negative positive symbol where it started.) - (correct answer)Series
A 45 V battery is connected to a 10.0 Ω resistor and a 5.0 Ω resistor in series. What will
be the total current in the circuit? - (correct answer)3.0 A
