Circuits Test Corrections

Current in an electric circuit can be DECREASED by...

• decreasing the voltage, decreasing the resistance

• increasing the voltage, increasing the resistance

• increasing the voltage, decreasing the resistance

• decreasing the voltage, increasing the resistance

Which statement is TRUE about SERIES circuits?

• Voltage is always the same

• Resistance adds up

• Current adds up

• Always includes a switch

Which statement is TRUE about PARALLEL circuits?

• Current is always the same

• Resistance adds up

• Voltage adds up

• Voltage is always the same

Fuses and circuit breakers are designed to ______.

• turn off a circuit before too much voltage passes through it.

• turn off a circuit before too much resistance passes through it.

• turn off a circuit before too much current passes through it.

• turn off a circuit before too much kilowatts pass through it.

In DC current ______. In AC current _____.

• switches directions, flows in one direction

• flows in one direction, switches directions

• the resistance adds up, the resistance gets smaller

• the resistance gets smaller, the resistance adds up

When you add resistors to a series circuit you...

• increase the resistance and increase the current

• increase the resistance and decrease the current

• decrease the resistance and decrease the current

• decrease the resistance and decrease the current

When you add resistors to a PARALLEL circuit you...

• decrease the resistance and increase the current

• decrease the resistance and decrease the current

• increase the resistance and increase the current

• increase the resistance and decrease the current

When you add a third light bulb to a series circuit...

• the other light bulbs get brighter and current increases.

• the other light bulbs get dimmer and current decreases.

• the other light bulbs get brighter and current decreases.

• the other light bulbs gets dimmer and current increases.

When you add a third light bulb to a parallel circuit...

• the other light bulbs gets dimmer because the voltage is shared.

• the other light bulbs stay the same because the voltage is shared.

• the other light bulbs get dimmer because each bulb is attached directly to the battery.

• the other light bulbs stay the same because each bulb is attached directly to the battery

Which of these symbols represents a resistor?

• A

• B

• C

• D