IG Physics Section 5

The type of force here is

• electrostatic attractive
• electrostatic repulsive
• magnetic
• gravitational

The SI unit of charge

• Coulomb
• Ampere
• Volt
• Ohm

The direction of the arrows indicate

• the force that would act on a positive charge

• the force that would act on a negative charge

• the vector of acceleration that would act on an electron

• gravitational field direction

Electric current is defined by the equation I=Q/t
In words:

• rate of flow of charge
• ratio of energy to time
• energy flow
• charge flow

The instrument pictured is used to measure

• electric current
• electric charge
• voltage
• resistance

What particle flows in metal wires to form an electric current?

• electrons
• protons
• neutrons
• atoms

In metal circuits conventional current flows from

• positive to negative terminals
• negative to positive terminals
• both ways
• none of these

Electrons move inside metal wires from

• negative to positive terminals
• positive to negative terminals
• both ways
• none of these

In electric circuits the emf is

• a source of electrical energy
• a sink of electrical energy
• a force that pushes electrons
• a transfer of energy

The Volt is the unit of potential difference and emf. It is the same as

• a Joule per Coulomb
• a Joule
• a Coulomb
• an Amp per Ohm