@An electrical circuit has 3A of current flowing in it. In 5s, how much charge is there?
15 Coulombs
0.6 Coulombs
1.67 Coulombs
@Another name for beams of electrons is:
Cathode rays
Microwaves
X-rays
@The energy an object has because of its height is called:
Potential energy
Kinetic energy
Displacement energy
@A ticker tape is produced where the dots are evenly spaced. This means the object was:
Moving at a constant velocity
Accelerating
Stationary
@When you suspend a mass on a spring it stretches so far and stops. Gravity pulls the mass down. What pulls it up?
Force from the spring
Air resistance
The objects weight
@If a current passes through a wire it makes a magnetic field. What shape is this field?
Circular
Like a bar magnet
The shape is very complicated
@A person walks 50m in 30 seconds and then rests for 30s. They walk back, this time taking 40s. What is the average speed?
1.0 m/s
0.71 m/s
1.67 m/s
@In a liquid, pressure:
Increases with depth
Decreases with depth
Increases up to a point and then decreases
@Which one of the following is a scalar
Power
Velocity
Acceleration
@A fridge works on the principle of:
Evaporation
Convection
Sublimation
@The opposite of expand is:
Contract
Grow bigger
Cool
@What is 1g per cubic cm equivalent to:
1000 kg/m³
1 kg/m³
1 kg/cm³
@Beta particles are
Electrons
Atomic nuclei
Neutral atoms
@What is the unit used to measure mass?
Kilogram
Newton
Weight
@What is the name given to the process when a prism splits light into a spectrum?
Dispersion
Destruction
Dispersal
@Which of the following colours has the shortest wavelength?
Blue
Red
Magenta
@Clear glass is:
Transparent
Opaque
Translucent
@Which lens is a diverging lens?
#lens2
Lens z
Lens x
Lens y
@What is the unit of wavelength
Metre
Hertz
Second
@If a current flows through a thin wire, which of the following effects are produced?
Heat & a magnetic effect
A magnetic field
Heat
@Two strips are rubbed with a cloth. One is hung on string, and the other brought near it. The hung strip moves towards the other strip. Which statement below is correct?
#rod
The strips are not made of the same material
The strips must be made of the same material
There is no way you can tell anything from this experiment
@If you want more current to flow in an electrical circuit, then you must:
Reduce the resistance
Increase the resistance
Keep changing the resistance
@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
