Closed loop

Closed loop

Multiple Choice

What will happen when the switch is open?

• bulb will go off

• bulb will stay lit, the same as before

Multiple Choice

How would you explain your answer to question 1

• There is still a complete electric current from the battery to the bulb and back to the battery.

• Breaking the circuit anywhere stops the current everywhere.

• The bulb is still connected to a positive and a negative battery terminal.

Multiple Choice

What will happen when set up like this?

• The bulb will light.

• The bulb will not light.

Multiple Choice

How would you explain your answer to the last question?

• There is not a complete electric circuit from the battery to the bulb and back to the battery.

• The bulb is connected to a positive and a negative battery terminal.

Multiple Choice

The three bulbs in this circuit are identical. How bright will the bulbs be?

• Bulb 1 brightest, then 2, then 3 the dimmest.

• Bulb 3 brightest, then bulb 2 , and bulb 1 is dimmest.

• Bulbs 1 and 3 are dim.

• All the bulbs are lit with the same brighness.

Multiple Choice

How would you explain your answer to the last question?

• The electric circuit is the same all the way around the circuit.

• Each bulb uses up some of the electric current, so there is less left for the next one.

• The electric current is shared between the three bulbs

• The electric current gets waker as it gets further away from the battery.