Question 30
Question 30 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
1. Motion, forces and ene...
1.7.4. Power

Define power as work done per unit time and also as energy transferred per unit time; recall and use the equations (a) P = W/t (b) P = ΔE/t

2. Thermal physics
2.3.4. Consequences of thermal ener...

Explain some of the complex applications and consequences of conduction, convection and radiation where more than one type of thermal energy transfer is significant, including: (a) a fire burning wood or coal (b) a radiator in a car

4. Electricity and magnet...
4.2.5. Electrical energy and electr...

Recall and use the equation for electrical energy E = IVt