Answer ALL questions. Look for any feedback given if you get an answer incorrect. Keep choosing an answer until you get it correct. CORRECT or INCORRECT answers are indicated at the TOP of the page. A score is given at the TOP of the page when the exercise has been completed.

What usit is used to describe the 'work' taken to 'push' electrons around a circuit?

watts

volts

joules

coulombs

What is e.m.f ?

electron-motive force

electro-motive force

electron-masgnetic force

electro-magnetic force

What is the definition of 1 ampare ?

1 ampare = 1 coulomb per second

1 ampare = 1 coulombe per second per second

1 ampare = 10 coulombs per second

1 ampare = 1 volt per second

What is meand by the abbreviation p.d. ?

potential difference

positive divider

potential divider

positive difference

Which one of the following statements is true ?

e.m.f and p.d. are measured using different units

current cannot flow without p.d.

e.m.f cannot be present without current flow

current is the flow of protons in a circuit

What is the SI unit of measure for p.d. ?

volt

amp

joule

coulomb

What is the force that 'pushes' electrons around an electrical circuit ?

e.m.f

current

power

p.d.

What is the SI unit for 'quantity' in an electrical circuit ?

joule

coulomb

watt

amp

To measure voltage in a circuit, how is a voltmeter is connected....

in series with the load

in parallel with the supply

in series or parallel with the supply

in series or parallel with the supply

To measure current in a circuit, how is an ammeter connected....

in series with the load

in parallel with the supply

in series or parallel with the supply

in series or parallel with the supply

A circuit is supplied at 10A with a power = 100w, calculate the supply voltage

1000v

10v

110v

90v

A circuit is supplied at 20v with a power = 100w, calculate the current in the circuit