E1: Current

The flow of electrons is called _______.

• Molecule

• Magnetism

• Current

• Electrica

What is this symbol for?

• light bulb

• switch

• Cell

• Battery

An atom becomes positive when;

• It loses and electron

• It gains an electron

• It loses a proton

• It gains a proton

Q=

• I x T

• I / T

• T / I

In metals the flow of charge is

• A flow of electrons

• A flow of negatively charged Protons

• A flow of positively charged electrons

1 A =

• 1 C m

• 1 C S

• 1 C s^-1

• 1 C m^-1

Define "Conservation of charge"

• The number of electrons within a circuit remains constant

• In an isolated system the charge stays constant

• When charge is created within a system it is not able to leave

• When a circuit is switched off the charge returns to and is held in the battery

Carrier Ions are;

• Positive

• Negative

• Positive or negative

• Neutral

A multi meter can ...

• ... only measure current and voltage.

• ... measure current, voltage and power.

• ... only measure resistance and current.

• ... measure resistance, voltage and current.

• ... only measure voltage.

What is the average electric current in a wire when a charge of 150 C passes in 30s?

• 5 A

• 5 C

• 0.2 A

• 0.2 C