Me with this science !

question 1 (3 points)
saved
(9.40_q1) which particle moves through a metal wire as electricity?

question 1 options:

protons

neutrons

electrons

atoms

question 2 (3 points)
(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

question 3 (3 points)
(9.40_q3) the flow of electrons is called and is symbolized as i

question 3 options:

voltage

current

resistance

ohm

question 4 (3 points)
(9.40_q4) the "force" causing electricity to flow is called

question 4 options:

voltage

current

resistance

ohms

question 5 (3 points)
(9.40_q5) the "force" opposing the flow of electricity is called

question 5 options:

voltage

current

resistance

amps

question 6 (3 points)
(9.40_q6) the current is measured in units of

question 6 options:

volts

ohms

amps

henrys

question 7 (3 points)
(9.40_q7) the voltage is measured in units of

question 7 options:

volts

amps

ohms

henrys

question 8 (3 points)
(9.40_q8) the resistance to the flow of electricity is measured in units of .

question 8 options:

volts

amps

ohms

henrys

question 9 (3 points)
(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.

question 10 (3 points)
(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.

question 11 (3 points)
(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.

question 12 (3 points)
(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

question 13 (3 points)
(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.

question 14 (3 points)
(9.40_q14) what kind of relationship exists between resistance and current?

question 14 options:

a direct relationship

no relationship

an inverse relationship

question 15 (3 points)
(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.

question 16 (3 points)
(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

question 17 (3 points)
(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

question 18 (3 points)
(9.40_q18) what kind of relationship exists between voltage and current?

question 18 options:

a direct relationship

no relationship

an inverse relationship

question 19 (3 points)
(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.

question 20 (3 points)
(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.