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- @An oscilloscope trace can be pulled left or right by applying a p.d to:
- X-plates
- Y-plates
- Grid
-
- @Electrons are emitted by:
- Cathode
- Anode
- X-plates
-
- @Which one of the following statements about electrons is correct?
- They are deflected in a magnetic field
- They are only deflected in North-South
- They are not deflected by magnetic fields
-
- @Which one of the following statements about electrons is correct?
- They have a negative charge
- They have no charge
- They have a small positive charge
-
- @An oscilloscope trace can be deflected up or down by applying a p.d trace to:
- Y-plates
- X-plates
- Cathode
-
- @Another name for beams of electrons is:
- Cathode rays
- Microwaves
- X-rays
-
- @The oscilloscope control that causes the trace to move from left to right is:
- Time base
- X-gain
- Trigger
-
- @In an oscilloscope, electrons are attracted towards:
- Anode
- Cathode
- Filament
-
- @If an alternating voltage is applied to the Y-plates of an oscilloscope then the trace will:
- Oscillate up and down
- Do nothing
- Move upwards
-
- @The diagram shows the trace on an oscilloscope. The time base was:
- #scope1
- turned on
- turned off
- doesn't make any difference whether its turned on or off
-
- @For an oscilloscope to produce this kind of trace it must have been connected to:
- #scope1
- an a.c source
- a d.c source
- a 1.5V cell
-
- @The diagram shows the trace obtained on an oscilloscope. By studying the settings on the oscilloscope you can calculate:
- #scope1
- the source voltage (p.d)
- the source current
- the source resistance
-
- @An experiment is set up, and produces this trace on an oscilloscope. Making the time base faster will:
- #scope1
- show more waves on the screen
- will make the waves taller in height
- make the waves smaller in height
-
- @An experiment produces an a.c output, measured on an oscilloscope. The root-mean-square (rms), or effective value, is:
- #scope1
- slightly less then the amplitude of the trace shown
- exactly the same value as the amplitude of the wave
- dependent on the number of waves shown on the screen
-
- @A source is connected to an oscilloscope, and produces the trace shown. The source is definitely not:
- #scope1
- a 1.5V cell (battery)
- mains electricity
- the output from a dynamo