Dynamic Excellence: GCSE Physics Questions and Expert Marking Schemes for Peak Performance

Which equation links current (I), power (P) and resistance (R)? A transmission cable has a power loss of 1.60 × 109 W. The current in the cable is 2000 A. Calculate the resistance of the cable. Use the Physics Equations Sheet to answer questions 01.4 and 01.5. 0 1 . 4 Write down the equa...

A student carried out an investigation to determine the spring constant of a spring. Figure 1 shows the spring before and after a mass was hung from the end of the spring. What is the extension of the spring in Figure 1? Give one safety precaution the student should have taken during this invest...

The driver applies the force shown in Figure 8. The force produces a moment about the pivot. How could the driver increase the moment about the pivot without increasing the size of the force? Infrared waves are transverse waves. In a transverse wave, the direction of oscillation is to the ...

A scientist investigated the radiation emitted by different radioactive isotopes. The scientist had a sample of polonium-210. The radiation emitted by polonium-210 can be represented by the SYMBOL 42 He. 0 1 . 1 Which type of radiation can be represented by the symbol 4 2 He? How many proto...

Wind power and solar power are both renewable energy resources used to generate electricity for the National Grid. 0 1 . 1 Which of the following is also a renewable energy resource? The energy transferred by the National Grid in one second was 36 gigajoules (GJ). Which of the following is t...

weight of the person causes an extension in the spring of 0.070 m. The spring constant of the spring is 12 000 N/m. 0 1 . 3 Calculate the weight of the person. Use the equation: weight = spring constant × extension Calculate the elastic potential energy stored in the extended spring. ...

Light changes direction when it enters the glass prism. What name is given to this process? Use the Physics Equations Sheet to answer questions 01.4 and 01.5. 0 1 . 4 Write down the equation that links frequency (f), wavelength (λ) and wave speed The wave in the middle of the spectrum has a...

switch 1 AO1 4.2.1.1 RPA4 current potential difference allow p.d. allow voltage in this order only 1 1 AO1 4.2.1.4 RPA4 electron 1 AO1 4.4.1.3 electron 1 AO1 4.4.1.3 an alpha particle and a gold nucleus are both positively charged 1 AO1 4.4.1.1 4.4.2.1 an alpha particle and...

increase decrease must be in this order 1 1 AO1 4.2.4.3 increase decrease must be in this order 1 1 AO1 4.2.4.3 useful energy output efficiency = total energy input or efficiency = useful output energy transfer total input energy transfer 1 AO1 4.1.2.2 so the thermometer te...

W = 0.050 × 9.8 W = 0.49 (N) do not accept 0.50 (N) alone 1 1 AO2 4.5.1.3 any one from: • clamp the stand to the desk • wear safety goggles / glasses • stand up / away from apparatus • limit the total mass used • have masses over the base of the stand 1 AO1 4.5.3 RPA6 (...

Level 3: The method would lead to the production of a valid outcome. The key steps are identified and logically sequenced. 5-6 AO3 AO1 AO1 4.6.2.2 Level 2: The method would not necessarily lead to a valid outcome. Most steps are identified, but the method is not fully logically seq...

any one from: • (longer tongs give) a greater distance between the scientist and the radioactive source • (longer tongs) reduce the amount of radiation the scientist is exposed to • (longer tongs) reduce the risk of cell mutation allow (longer tongs) reduce the risk of cancer 1 ...

Level 3: Relevant points (reasons / causes) are identified, given in detail and logically linked to form a clear account. 5–6 AO3 AO1 AO2 6.1.3 Level 2: Relevant points (reasons / causes) are identified, and there are attempts at logical linking. The resulting account is not fully cle...

Similarity any one from: • same speed (in a vacuum) • both transfer energy • both transverse Difference any one from: • gamma has a higher frequency • gamma has a shorter wavelength • gamma is more ionising • gamma is more penetrating allow both can travel throu...