Physics 9702 A2 Level Questions & Correct
and Verified Answers.Latest
update2025/2026 Graded A+, Exams of
Nursing
Alternating current equation - CORRECT ANSWERS I = I0 sin ωt
Define the rms value of an alternating current - CORRECT ANSWERS equal to the steady direct
curent which converts electrical energy to other forms of energy at the same rate and conditions
Irms = ? - CORRECT ANSWERS I0/√2
Transformer equation - CORRECT ANSWERS Vs/Vp = Ns/Np = Ip/Is
Power loss equation - CORRECT ANSWERS Ploss = I2R
Types of rectification - CORRECT ANSWERS Half-wave and Full-wave
Define capacitance - CORRECT ANSWERS charge stored per unit potential difference
Capacitance equation for parallel plates - CORRECT ANSWERS C = εA/d
Functions of insulator - CORRECT ANSWERS Increases capacitance, increases distance, allows
the use of high voltages
,Capacitance equation for sphere - CORRECT ANSWERS C = 4πε0r
Capacitors in series formula - CORRECT ANSWERS 1/c = 1/c1 + 1/c2 + 1/c3 + ...
Capacitors in parallel formula - CORRECT ANSWERS c = c1 + c2 + c3 + ...
How are the charges in a capacitor kept separated? - CORRECT ANSWERS work is done by the
battery to separate the charges
Work done equation by capacitor - CORRECT ANSWERS W = (1/2)QV
Coulomb's Law equation - CORRECT ANSWERS F = Qq/4πε0r2
Electric field strength equation - CORRECT ANSWERS Q/4πε0r2
Electric potential equation - CORRECT ANSWERS Q/4πε0r
How does air conduct due to a charged sphere? - CORRECT ANSWERS The electrons of the
atoms of air molecules are stripped off
Magnetic flux equation - CORRECT ANSWERS φ = BA cos θ
Magnetic flux linkage equation - CORRECT ANSWERS Φ = NBA = Nφ
How does electromagnetic induction occur? - CORRECT ANSWERS when there is change in
magnetic flux linkage or cutting of the magnetic flux
,Faraday's Law equation - CORRECT ANSWERS E = -δ(Nφ)/δt
The magnitude of the induced emf depends on - CORRECT ANSWERS velocity, magnetic field
and no. of turns
Lenz's Law - CORRECT ANSWERS The direction of the induced emf is such that its magnetic
effect always oppose the change producing it
When do eddy currents occur? - CORRECT ANSWERS when a conductor moves in a non-
uniform magnetic field, when a conductor is in a region of changing magnetic field
What effects do eddy currents give? - CORRECT ANSWERS heating and magnetic effects
How is the direction of eddy currents determined? - CORRECT ANSWERS Using Lenz's Law
Describe the process of eddy currents induction - CORRECT ANSWERS rate of cutting magnetic
flux is not uniform so different emfs induced at different parts therefore current flows due to difference
in emf induced
How do eddy currents dissipate energy in shm? - CORRECT ANSWERS derived from kinetic
energy of oscillations which depends on amplitude
Force on conductor equation - CORRECT ANSWERS F = BIL sin θ
What is the force on the conductor caused by? - CORRECT ANSWERS the interaction between
two magnetic fields
Force on moving particle - CORRECT ANSWERS F = Bqv sin θ
, What is the direction of the force acting on a conductor? - CORRECT ANSWERS perpendicular
to the magnetic field
What causes a particle to move in a helical shape? - CORRECT ANSWERS enters a magnetic
field at an angle
Interaction between two wires of same current direction - CORRECT ANSWERS repel
Interaction between two wires of opposite direction - CORRECT ANSWERS attract
Ideal gas equation - CORRECT ANSWERS pV = nRT
Boyle's Law - CORRECT ANSWERS pressure is inversely proportional to volume
Charles' Law - CORRECT ANSWERS volume is directly proportional to temperature
Pressure Law - CORRECT ANSWERS pressure is directly proportional to temperature
Describe and explain the brownian motion - CORRECT ANSWERS smoke particles are randomly
bombarded with air molecules causing haphazard, erratic and jerky movement of the particles
Ideal gas assumptions - CORRECT ANSWERS negligible volume of gas compared to container,
negligible intermolecular forces, constant random motion, collisions are perfectly elastic
Pressure of gas equation - CORRECT ANSWERS p = (1/3) Nm/V < c2>
and Verified Answers.Latest
update2025/2026 Graded A+, Exams of
Nursing
Alternating current equation - CORRECT ANSWERS I = I0 sin ωt
Define the rms value of an alternating current - CORRECT ANSWERS equal to the steady direct
curent which converts electrical energy to other forms of energy at the same rate and conditions
Irms = ? - CORRECT ANSWERS I0/√2
Transformer equation - CORRECT ANSWERS Vs/Vp = Ns/Np = Ip/Is
Power loss equation - CORRECT ANSWERS Ploss = I2R
Types of rectification - CORRECT ANSWERS Half-wave and Full-wave
Define capacitance - CORRECT ANSWERS charge stored per unit potential difference
Capacitance equation for parallel plates - CORRECT ANSWERS C = εA/d
Functions of insulator - CORRECT ANSWERS Increases capacitance, increases distance, allows
the use of high voltages
,Capacitance equation for sphere - CORRECT ANSWERS C = 4πε0r
Capacitors in series formula - CORRECT ANSWERS 1/c = 1/c1 + 1/c2 + 1/c3 + ...
Capacitors in parallel formula - CORRECT ANSWERS c = c1 + c2 + c3 + ...
How are the charges in a capacitor kept separated? - CORRECT ANSWERS work is done by the
battery to separate the charges
Work done equation by capacitor - CORRECT ANSWERS W = (1/2)QV
Coulomb's Law equation - CORRECT ANSWERS F = Qq/4πε0r2
Electric field strength equation - CORRECT ANSWERS Q/4πε0r2
Electric potential equation - CORRECT ANSWERS Q/4πε0r
How does air conduct due to a charged sphere? - CORRECT ANSWERS The electrons of the
atoms of air molecules are stripped off
Magnetic flux equation - CORRECT ANSWERS φ = BA cos θ
Magnetic flux linkage equation - CORRECT ANSWERS Φ = NBA = Nφ
How does electromagnetic induction occur? - CORRECT ANSWERS when there is change in
magnetic flux linkage or cutting of the magnetic flux
,Faraday's Law equation - CORRECT ANSWERS E = -δ(Nφ)/δt
The magnitude of the induced emf depends on - CORRECT ANSWERS velocity, magnetic field
and no. of turns
Lenz's Law - CORRECT ANSWERS The direction of the induced emf is such that its magnetic
effect always oppose the change producing it
When do eddy currents occur? - CORRECT ANSWERS when a conductor moves in a non-
uniform magnetic field, when a conductor is in a region of changing magnetic field
What effects do eddy currents give? - CORRECT ANSWERS heating and magnetic effects
How is the direction of eddy currents determined? - CORRECT ANSWERS Using Lenz's Law
Describe the process of eddy currents induction - CORRECT ANSWERS rate of cutting magnetic
flux is not uniform so different emfs induced at different parts therefore current flows due to difference
in emf induced
How do eddy currents dissipate energy in shm? - CORRECT ANSWERS derived from kinetic
energy of oscillations which depends on amplitude
Force on conductor equation - CORRECT ANSWERS F = BIL sin θ
What is the force on the conductor caused by? - CORRECT ANSWERS the interaction between
two magnetic fields
Force on moving particle - CORRECT ANSWERS F = Bqv sin θ
, What is the direction of the force acting on a conductor? - CORRECT ANSWERS perpendicular
to the magnetic field
What causes a particle to move in a helical shape? - CORRECT ANSWERS enters a magnetic
field at an angle
Interaction between two wires of same current direction - CORRECT ANSWERS repel
Interaction between two wires of opposite direction - CORRECT ANSWERS attract
Ideal gas equation - CORRECT ANSWERS pV = nRT
Boyle's Law - CORRECT ANSWERS pressure is inversely proportional to volume
Charles' Law - CORRECT ANSWERS volume is directly proportional to temperature
Pressure Law - CORRECT ANSWERS pressure is directly proportional to temperature
Describe and explain the brownian motion - CORRECT ANSWERS smoke particles are randomly
bombarded with air molecules causing haphazard, erratic and jerky movement of the particles
Ideal gas assumptions - CORRECT ANSWERS negligible volume of gas compared to container,
negligible intermolecular forces, constant random motion, collisions are perfectly elastic
Pressure of gas equation - CORRECT ANSWERS p = (1/3) Nm/V < c2>
