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