CA4Wk6

1. Which switch or switches must be closed to make the lamps light?

• Only switch 1

• Only switch 1

• Switches 1 and 2

• Switches 1 , 2 and 3

Tags

NGSS.HS-PS3-5

If lamp 1 is unscrewed from its holder, what will happen to lamp 2?

• The bulbs will get brighter

• The bulbs will stay the same brightness

• The bulbs will go out

• Nothing will happen

If lamp 2 is unscrewed from its holder, what will happen to lamp1?

• The bulbs will stay lit

• The bulbs will go out

• The bulbs will get dimmer

• The bulbs will disappear

A series circuit has ____ path(s) that the electric current can take. 

• One
• Two 
• Three 
• Four

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

What is the total resistance

• 20V
• 0.8Ω
• 25Ω
• 1.2Ω

What happens when the middle bulb blows ?

• All bulbs go out

• The first stays on

• The remaining bulbs stay on

• The last bulb stays on

What is the current through the 20Ω resistor

• 0.6A
• 0.3C
• 6V
• 0.3A

If three 1.5 V cells are connected in parallel

• the combined emf is 4.5 V and it will last as long as a single 1.5 V cell

• the combined emf is 1.5 V and it will last longer than a single 1.5 V cell

• the combined emf is 4.5 V and it will last as long as a single 1.5 V cell

• none of these

Five 100 Ω resistors are connected parallel, what is the equivalent resistance?

• 20 Ω

• 120 Ω

• 200 Ω

• 500 Ω