9.40_q1) which particle moves through a metal wire as electricity?

question 1 options:

protons

neutrons

electrons

atoms

(9.40_q2) electrons move

question 2 options:

thru the circuit from the negative power terminal to the positive power terminal

thru the circuit from the positive power terminal to the negative power terminal

(9.40_q3) the flow of electrons is called and is symbolized as i

question 3 options:

voltage

current

resistance

ohm

(9.40_q4) the "force" causing electricity to flow is called

question 4 options:

voltage

current

resistance

ohms

(9.40_q5) the "force" opposing the flow of electricity is called

question 5 options:

voltage

current

resistance

amps

(9.40_q6) the current is measured in units of

question 6 options:

volts

ohms

amps

henrys

(9.40_q7) the voltage is measured in units of

question 7 options:

volts

amps

ohms

henrys

(9.40_q8) the resistance to the flow of electricity is measured in units of .

question 8 options:

volts

amps

ohms

henrys

(9.40_q9) when electricity goes through an electrical component it encounters a resistance to its flow. what happens to the voltage of the electricity as it goes through the component?

question 9 options:

the voltage is increased because of the electrical resistance.

the voltage is unchanged by the electrical resistance.

the voltage is decreased by the electrical resistance.

(9.40_q10) what happens if an led is installed backward in a circuit

question 10 options:

it works, but it glows with the wrong color.

it works and glows so brightly it can hurt your eyes.

it doesn't work. the electricity can't go backwards thru an led.

(9.40_q11) in a 3 volt circuit, a 10 ω (ohm) resistor is replaced with a 15 ω resistor. what will happen to the current?

question 11 options:

the current will increase.

the current will remain unchanged.

the current will decrease.

(9.40_q12) what is the current in a 9 volt circuit with 12 ω resistance?

question 12 options:

9 amp

1.33 amp

0.67 amp

0.75 amp

(9.40_q13) in a 12 volt circuit, a 20 ω resistor is replaced with a 12 ω resistor. what happens to the current?

question 13 options:

the current increases.

the current is unchanged.

the current decreases.

(9.40_q14) what kind of relationship exists between resistance and current?

question 14 options:

a direct relationship

no relationship

an inverse relationship

(9.40_q15) the 9 volt battery is replaced with a 12 volt battery in a circuit with 12 ω resistance. what happens to the current?

question 15 options:

the current increases.

the current is unchanged

the current decreases.

(9.40_q16) what is the current in a circuit with a 6 volt battery and 1.5 ω resistance?

question 16 options:

0.25 amp

0.4 amp

4 amp

9 amp

(9.40_q17) a 6 volt battery is replaced with a 3 volt battery in a circuit with 3 ω resistance. what happens to the current?

question 17 options:

the current increases.

the current is unchanged

the current decreases

(9.40_q18) what kind of relationship exists between voltage and current?

question 18 options:

a direct relationship

no relationship

an inverse relationship

(9.40_q19) which affects which? does voltage affect current or does current affect voltage?

question 19 options:

voltage affects current

voltage and current have no relationship with each other

current affects voltage

voltage and current both affect each other.

(9.40_q20) a 12 volt battery is replaced with a 6 volt battery at the same time as the resistance of a circuit is reduced from 5 ω to 2.5 ω. what happens to the current?

question 20 options:

the current increases

the current is unchanged

the current decreases

it is impossible to tell with the information provided.