Power
1.7.5What the syllabus asks of you
- Define power as work done per unit time and also as energy transferred per unit time; recall and use the equations (a) power = work done / time taken P = W / t (b) power = energy transferred / time taken P = ∆E / t
Read the notes first
Chapter 1: Power
Drill this topic
Every question on Power, untimed, marked as you go.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
19 questions
1Oct / Nov 2025 · Paper 12 · Q18Show mark scheme →
AP = \frac{md}{gt}
BP = \frac{mgd}{t}
CP = \frac{dt}{mg}
DP = \frac{m}{gdt}
Mark scheme
2Oct / Nov 2024 · Paper 11 · Q1Show mark scheme →
AkN
BkW
CkN / s
DkW h
Mark scheme
3Oct / Nov 2024 · Paper 12 · Q12Show mark scheme →
A2.0 kg, distance of 2.0 m in time of 3.0 s
B1.5 kg, distance of 2.5 m in time of 2.0 s
C2.0 kg, distance of 2.0 m in time of 1.5 s
D1.5 kg, distance of 2.5 m in time of 1.5 s
Mark scheme
4May / June 2024 · Paper 12 · Q17Show mark scheme →
Agravitational potential energy
Blatent heat
Cpower
Dwork
Mark scheme
5Oct / Nov 2023 · Paper 11 · Q11Show mark scheme →
A2.0 J
B50 J
C300 J
D3000 J
Mark scheme
6Oct / Nov 2023 · Paper 12 · Q15Show mark scheme →
A1500 minutes
B100 minutes
C50 minutes
D25 minutes
Mark scheme
7Oct / Nov 2022 · Paper 12 · Q19Show mark scheme →
AJ s
BJ / s
CN s
DN / s
Mark scheme
8May / June 2022 · Paper 12 · Q14Also set in May / June 2022 Paper 11Show mark scheme →
A12 N
B8 N
C10 N
D4 N
Mark scheme
9Oct / Nov 2020 · Paper 12 · Q16Show mark scheme →
Aforce per second
Bthe maximum force an object exerts
Cthe total energy of an object
Dwork done per second
Mark scheme
10May / June 2020 · Paper 11 · Q16Show mark scheme →
A0.90 kW
B5.0 kW
C8.0 kW
D9.0 kW
Mark scheme
11May / June 2020 · Paper 12 · Q22Show mark scheme →
Ameasuring cylinder and thermometer
Bmeasuring cylinder and metre rule
Cmetre rule and stop-watch
Dstop-watch and thermometer
Mark scheme
12Oct / Nov 2019 · Paper 12 · Q16Show mark scheme →
Aefficiency
Benergy
Cpower
Dwork
Mark scheme
13May / June 2019 · Paper 12 · Q20Show mark scheme →
A1, 2 and 3
B1 and 2 only
C1 and 3 only
D3 only
Mark scheme
14May / June 2018 · Paper 11 · Q12Show mark scheme →
Aheight × time × weight
B\frac{height \times weight}{time}
C\frac{time \times weight}{height}
D\frac{weight}{height \times time}
Mark scheme
15Oct / Nov 2017 · Paper 11 · Q10Show mark scheme →
A0.25 W
B4.0 W
C100 W
D10 000 W
Mark scheme
16Oct / Nov 2017 · Paper 12 · Q9Show mark scheme →
A8.4 × 10^3 W
B8.4 × 10^4 W
C2.1 × 10^7 W
D2.1 × 10^8 W
Mark scheme
17May / June 2017 · Paper 12 · Q14Also set in May / June 2017 Paper 11Show mark scheme →
A2.0 J
B50 J
C300 J
D3000 J
Mark scheme
18Oct / Nov 2016 · Paper 11 · Q11Show mark scheme →
A\frac{\text{distance}}{\text{work done}}
Bwork done × distance
C\frac{\text{work done}}{\text{time taken}}
Dwork done × time taken
Mark scheme
19Oct / Nov 2016 · Paper 12 · Q15Show mark scheme →
A0.50 milliwatts
B2.0 watts
C2.0 kilowatts
D9.8 megawatts
Mark scheme