Closed Switch, Open Switch

What is the condition of the bulbs if I close the switches in this series circuit?

• The bulb will blink

• Nothing happens

• All the bulbs will light up

• All the bulbs will not light up

There is two switches in a series circuit that was built up by Mary. She opened one switch. To her surprise the bulb did not light up. Why?

( Choose only one suitable answer )

• This is because the switch is closed.

• This is because the series circuit is now a incomplete circuit and electric current cant flow.

• No reason

• This is because in series circuit there is two branch for electric current to flow.

In a parallel circuit that was built up by the pupils of 5 Nermai has two branch. In the first branch the switch is closed and on the second branch the switch is open. Which bulb light up? ( is it the first branch bulb or the second branch bulb ) type and choose the correct answer that is in blue ccolour.

Do you think without a switch, is the circuit complete or uncomplete?

• Complete

• Sometimes it is uncomplete and complete

• Uncomplete

• We need a bulb

What is disavantage of  this circuit?

• If one bulb is burnt in this circuit the other bulbs could not light up.

• If one bulb is burnt in this circut the other bulbs could light up.

• We dont need any switch.

• If one bulb is not burnt the other bulb could not light up.