Single Award Physics topics 1-3

Noel needs to know which direction electrons flow from a battery. Which statement about the flow of electrons is correct?

• Electrons flow from north to south because of Earth's magnetic field.

• Electrons flow from south to north because of Earth's magnetic field.

• Electrons flow from the positive terminal of a battery to the negative terminal of a battery.

• Electrons flow from the negative terminal of a battery to the positive terminal of a battery

There is only one path for the electrons to follow.

• conductor

• insulator

• parallel circuit

• series circuit

A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

If one of the light bulbs in a series circuit is removed from its socket (the socket is left in place), what will happen to the other light bulbs?

• The other light bulbs will stay lit with the same brightness

• The other light bulbs will go out

• The other light bulbs will burn brighter

• Both light bulb will stay lit

Answer explanation

The current in a series circuit is the same everywhere. Unplugging a bulb forces the current in that bulb to be zero, making the current zero everywhere.

If one of the light bulbs in a parallel circuit is removed from its socket (the socket is left in place), what will happen to the other light bulbs?

• The other light bulbs will stay lit with the same brightness

• The other light bulbs will go out

• The other light bulbs will burn brighter

• Both light bulb will stay lit

Answer explanation

The current in any branch on a parallel circuits is independent of what is going on in the other branches.

Volt meters are connected in.....

• series

• parallel

Ammeters are connected in.....

• series

• parallel

If this systems draws 10 amps of current, what would the ammeter read in this picture?

• 0 amps

• 5 amps

• 10 amps

• 20 amps

How are these cells connected?

• series

• parallel