Full Paper 1 Revision Flashcards
What is the SI unit for current?
Ampere (A)
What is the formula for calculating resistance?
Resistance = Voltage / Current
True or False: In a series circuit, the total resistance is equal to the sum of individual resistances.
True
What is the unit of power?
Watt (W)
What is the formula for calculating power?
Power = Voltage x Current
What is the relationship between current and resistance in a circuit?
As resistance increases, current decreases
What is the formula for calculating energy transferred?
Energy = Power x Time
What is the SI unit for energy?
Joule (J)
How does the potential difference affect current in a circuit?
Higher potential difference leads to higher current
What is the relationship between voltage and current in a circuit?
Current is directly proportional to voltage
What is the SI unit for energy?
Joule
True or False: Work done is the same as energy transferred.
True
What is the equation for calculating power?
Power = work done / time taken
Which type of energy is stored in a stretched spring?
Elastic potential energy
What is the equation for calculating kinetic energy?
Kinetic energy = 0.5 x mass x speed^2
What is the principle of conservation of energy?
Energy cannot be created or destroyed, only transferred or transformed
What is the unit of power?
Watt
What is the formula for calculating the efficiency of a device?
Efficiency = (useful energy output / total energy input) x 100%
Which type of energy is stored in food?
Chemical potential energy
What is the equation for calculating gravitational potential energy?
Gravitational potential energy = mass x gravitational field strength x height
True or False: Energy can be converted from one form to another with 100% efficiency.
False
What is the unit for power in the SI system?
Watt
What is the formula for calculating work done?
Work done = force x distance moved in the direction of the force
Which type of energy is associated with the motion of particles?
Thermal energy
What is the equation for calculating the spring constant?
Spring constant = force / extension
What is the unit for force in the SI system?
Newton
What is the equation for calculating the efficiency of a machine?
Efficiency = (useful output energy / total input energy) x 100%
Which type of energy is associated with the position or configuration of an object?
Potential energy
True or False: Power is the rate at which energy is transferred or transformed.
True
What is the formula for calculating the change in gravitational potential energy?
Change in gravitational potential energy = mass x gravitational field strength x change in height
