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WorksheetsRevision Year 11 Topics: The Basics
Total questions: 20
Worksheet time: 20mins
What are magnetic materials?
Materials that can be attracted by magnets
Materials that cannot be attracted by magnets
Materials that can become magnets
Which statement is NOT TRUE about magnetic field?
The field direction is from South to North
The field lines are continuous
Near field lines indicates weaker magnetic field
What should we do to demagnetise a magnet?
Put it into a solenoid connected with direct current
Put it into a solenoid connected with direct current then slowly remove it
Put it into a solenoid connected with alternating current then slowly remove it
Which statement is TRUE about soft magnetic materials?
Soft magnetic material are materials that can be easily magnetised and demagnetised like iron
Soft magnetic material are materials that can be easily magnetised and demagnetised like steel
Soft magnetic material are materials that cannot be easily magnetised and demagnetised like steel
In a solenoid carrying current, the magnetic field of the solenoid can be increased by
Increasing the current
Decreasing the number of turns of coil
Inserting an iron core
Which statements are CORRECT about Fleming's Left Hand Rule?
The thumb indicate the direction of magnetic field
The first finger (jari telunjuk) indicates the direction of force
The second finger (jari hantu) indicates the direction of current
In a DC Motor, the ends of the coil is connected with..
Split rings
Slip rings
magnets
What happens in electromagnetic induction?
Current flows in a conductor, then e.m.f is induced and it experiences a changing magnetic field
A conductor experiences a constant magnetic field, then e.m.f. is induced in that conductor and current flows
A conductor experiences a changing magnetic field, then e.m.f. is induced in that conductor and current flows
In an AC generator, if we double the speed of the rotation of the coil, the e.m.f. is...
doubled
halved
no change
In a transformer, the voltage in the secondary coil is bigger than the voltage in the primary coil. This means the number of turns in the secondary coil is __________ than/to the number of turns in the primary coil
bigger
smaller
equal
In power transmission cables, high voltage are used to..
Increase the current
Decrease the current
Reduce power or energy loss
In a cathode-ray oscilloscope, the voltage can be measured by..
Measuring the beam deflection vertically
Measuring the beam deflection horizontally
Measuring the period of the wave
The figure shows a potential divider. How can we calculate Vout?
Vout=R2R1×Vin
Vout=R1+ R2R1×Vin
Vout=R1+ R2R2×Vin
Choose the correct option to fill in this statement:
A thermistor's resistance increases as temperature __________ and a light-dependent resistor's resistance increases as brightness ___________
increases, increases
decreases, decreases
decreases, increases
The nucleus of a atom is made up of
protons and neutrons
protons and electrons
neutrons and electrons
Isotopes are atoms of ________ element which has ________ number of protons but ________ number of neutrons
same, different, same
same, same, different
different, same, same
Which type of radioactive emission and its particle is NOT CORRECT?
alpha radiation - helium nucleus
beta radiation - electron
alpha radiation - helium atom
After going through a beta decay, the daughter nucleus's proton number ___________ and its mass number ___________
increases by 1, remains the same
decreases by 1, increases by 1
decreases by 1, remains the same
Which statement is/are TRUE about nuclear fission?
A large nucleus splits into two smaller nuclei
Two small nuclei come together to form a large nucleus
An energetic neutron bombards a nucleus
What is meant by half-life?
the time taken for the number of nuclei/atoms to halve
the number of nuclei/atoms after being halved
it's a game played in mobile phones
