PHYSICS PAPER 1 2024 QUESTIONS AND
ANSWERS WITH SOLUTIONS
Question 1.1 - ANSWER Increase
Decrease
What equation links current power and resistance? - ANSWER P=I^2R
Calculate the resistance - ANSWER P= I^2R work out calc
Write down the equation which links efficiency, total energy input and useful energy output? - ANSWER
Efficiency = useful energy output/total energy input
Calculate the useful energy output from this power station? - ANSWER X both num together
Suggest why the student left the themometer in iron block for a few min before recording initial temp? -
ANSWER To make sure the thermometer had enough time to display the correct temp
What effect will adding insulation have had on the investigation? - ANSWER A and B
What is meant by direct potential diff? - ANSWER The driving force comes directly from the battery to
the battery carrying current through the circuit in 1 direction.
What equation links charge flow, energy and potential diff? - ANSWER E=QV
Calculate the charge flow? - ANSWER Divide the num given
Explain the changes in the arrangement and movement of the particles as the ice melted and the temp
increased to 5 degree? - ANSWER . As the temperature increases from 0 degrees Celsius to 5 degrees
. The ice gained thermal energy
. This thermal energy was converted into kinetic energy
, . This allowed the particles in the ice that had a fixed shape and volume to vibrate more
. By vibrating more the bonds between the molecules were broken.
. Melting the ice and changing state of matter
. In solid block of ice particles have a high density and a fixed shape
. Melted ice particles have weaker bonds and is less dense
. Temp remains constant, internal energy increases
4.1 - ANSWER
4.2 - ANSWER
Explain why this improves the reliability of the electricity supply to the village? - ANSWER . Solar power
relies on sunlight
. The power output falls mainly during April-sep(mainly summer)
. Means there will be sunlight so reliability of electricity is improved
Compare the structure of an atom of carbon 14 with structure of an atom of Carbon 12? - ANSWER .
Carbon 14 will have 2 more neutrons in its nucleus than carbon 12
. Both will contain same num of protons and electrons
. As they are isotopes
What does a half life of 570p years mean? - ANSWER It takes 5700 years for activity to halve
5.3 - ANSWER
Explain which isotope would cause the biggest risk to a persons health bases only on each half life of
each isotope? - ANSWER . Nitrogen 18.
. Flurione 18 has the longest half life so it takes longest amount of time for radioactivity to half
. Means fluorine 18 would emit harmful radiation for long amount of time
. Compared to other isotopes
ANSWERS WITH SOLUTIONS
Question 1.1 - ANSWER Increase
Decrease
What equation links current power and resistance? - ANSWER P=I^2R
Calculate the resistance - ANSWER P= I^2R work out calc
Write down the equation which links efficiency, total energy input and useful energy output? - ANSWER
Efficiency = useful energy output/total energy input
Calculate the useful energy output from this power station? - ANSWER X both num together
Suggest why the student left the themometer in iron block for a few min before recording initial temp? -
ANSWER To make sure the thermometer had enough time to display the correct temp
What effect will adding insulation have had on the investigation? - ANSWER A and B
What is meant by direct potential diff? - ANSWER The driving force comes directly from the battery to
the battery carrying current through the circuit in 1 direction.
What equation links charge flow, energy and potential diff? - ANSWER E=QV
Calculate the charge flow? - ANSWER Divide the num given
Explain the changes in the arrangement and movement of the particles as the ice melted and the temp
increased to 5 degree? - ANSWER . As the temperature increases from 0 degrees Celsius to 5 degrees
. The ice gained thermal energy
. This thermal energy was converted into kinetic energy
, . This allowed the particles in the ice that had a fixed shape and volume to vibrate more
. By vibrating more the bonds between the molecules were broken.
. Melting the ice and changing state of matter
. In solid block of ice particles have a high density and a fixed shape
. Melted ice particles have weaker bonds and is less dense
. Temp remains constant, internal energy increases
4.1 - ANSWER
4.2 - ANSWER
Explain why this improves the reliability of the electricity supply to the village? - ANSWER . Solar power
relies on sunlight
. The power output falls mainly during April-sep(mainly summer)
. Means there will be sunlight so reliability of electricity is improved
Compare the structure of an atom of carbon 14 with structure of an atom of Carbon 12? - ANSWER .
Carbon 14 will have 2 more neutrons in its nucleus than carbon 12
. Both will contain same num of protons and electrons
. As they are isotopes
What does a half life of 570p years mean? - ANSWER It takes 5700 years for activity to halve
5.3 - ANSWER
Explain which isotope would cause the biggest risk to a persons health bases only on each half life of
each isotope? - ANSWER . Nitrogen 18.
. Flurione 18 has the longest half life so it takes longest amount of time for radioactivity to half
. Means fluorine 18 would emit harmful radiation for long amount of time
. Compared to other isotopes
