2763822
Description
Quiz by 10jonty.bird, updated more than 1 year ago
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Created by CartMcGrart
over 9 years ago
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Copied by 10jonty.bird
over 9 years ago
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Question 1
Question
What does the gradient on a distance time graph represent?
Answer
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velocity
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distance travelled
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momentum
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acceleration
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speed
Question 2
Question
What does gradient of the line on a velocity time graph represent?
Answer
-
speed
-
acceleration
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velocity
-
distance travelled
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kinetic energy
Question 3
Question
The stopping distance of a vehicle is the equal to:
Answer
-
the sum of the reaction time and the braking time
-
the sum of the breaking distance and the distance travelled in during the reaction time
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the sum of the thinking distance the breaking time
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the sum of the thinking distance and the breaking distance
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the product of the breaking time and the thinking distance
Question 4
Question
the current potential difference graph for a resistor at a constant temperature is:
Answer
-
line x=0
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line y=0
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line y=x
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line y=-x
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y=x until halfway up the graph where it remains as y= (halfway up the y scale)
Question 5
Question
The greater the resistance, the __________ the current, for a component at a given _________.
Answer
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greater
-
smaller
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altitude
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voltage
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charge
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resistance
-
faster
Question 6
Question
For components connected in series:
Answer
-
the total resistance is the sum of the resistance in all the components
-
the P.D is the same across all the components
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the charge is constantly changing in all the components
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same current through each component
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the total current through the whole circuit is the sum of the currents through the separate components.
-
the potential difference of the supply is the shared between the components
Question 7
Question
Mains electricity is a.c.
Answer
- True
- False
Question 8
Question
Mains electricity has a frequency of:
Answer
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60Hz
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70Hz
-
80Hz
-
50Hz
-
230Hz
Question 9
Question
The units of charge are
Answer
-
volts
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joules
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ampere
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watts
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kilowatts
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couloumbs
Question 10
Question
What comes directly after the main sequence of a star about the size of our sun?
Answer
-
white dwarf
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black dwarf
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red super giant
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nebula
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red giant
Question 11
Question
One eventual outcome for a huge star is a black hole, what is the other?
Answer
-
Supernova
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White dwarf
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Nebula
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Neutron star
Question 12
Question
The current through a resistor is inversely proportional to the potential difference across the resistor.
Answer
- True
- False
Question 13
Question
RCCBs operate by detecting a difference between:
Answer
-
The temperature of the wire and its surroundings
-
The resistance in the plug and in the appliance.
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The current in the live wire and the current in the neutral wire.
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The voltage in the live wire and the current in the neutral wire.
-
The voltage in the live wire and the voltage in the neutral wire.
Question 14
Question
The frequency of Ultrasound is:
Answer
-
20Hz to 20kHz
-
20kHz to 200kHz
-
20Hz to 200Hz
-
20kHz+
-
200kHz+
-
2000kHz+
Question 15
Question
The equivalent of the retina in a camera is the film.
Answer
- True
- False
Question 16
Question
In an optical fibre cable, the light is totally internally reflected because the angle of incidence always remains:
Answer
-
greater than the angle of refraction.
-
the same.
-
equal to the angle of refraction
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smaller than the angle of refraction.
-
greater than the critical angle.
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equal to the critical angle.
-
smaller than the critical angle.
Question 17
Question
If an object is turning, the clockwise moment must be exactly balanced to the anticlockwise moment.
Answer
- True
- False
Question 18
Question
In the motor effect, the size of the force can be increased by:
Answer
-
Increasing the voltage
-
Increasing the current
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Increasing the charge
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Increasing the size of the magnet
-
increasing the magnetic field strength
Question 19
Question
In a step up transformer the p.d across the secondary coil is greater than the p.d across the primary coil.
Answer
- True
- False
Question 20
Question
Switch mode transformers work at a _________ frequency
Answer
-
high
-
low
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