AQA PHYSICS A LEVEL ELECTRICITY ACTUAL
PRACTICE EXAM WITH WELL ELABORATED AND
MOST TESTED REAL PRACTICE QUESTIONS AND
100% CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES PLUS EXPERT ANSWER KEY
2026-2027 Q&A 100% GUARANTEED PASS A+ INSTANT
DOWNLOAD PDF
1. What is the definition of electric current?
A. The flow of electrons around a circuit
B. The rate of flow of charge
C. The energy transferred per unit charge
D. The potential difference across a component
Rationale: Current is defined as the rate of flow of charge, I = ΔQ/Δt. It is
measured in amperes (A), where 1 A = 1 C s⁻¹.
2. Which equation correctly relates current, charge, and time?
A. I = Q × t
B. I = Q / t
C. I = t / Q
D. I = Q² / t
Rationale: Current is the rate of flow of charge, so I = Q/t, where Q is charge in
coulombs and t is time in seconds.
,3. What is the conventional direction of current in a circuit?
A. The direction of electron flow
B. The direction positive charge would flow, from positive to negative
C. The direction of neutron flow
D. Random in all directions
Rationale: Conventional current is defined as the direction in which positive
charge would flow, from the positive terminal to the negative terminal of a
source.
4. In a metal wire, what are the actual charge carriers?
A. Protons
B. Electrons
C. Positive ions
D. Neutrons
Rationale: In metals, current is carried by free electrons (delocalised electrons)
which move in the opposite direction to conventional current.
5. The elementary charge is approximately:
A. 1.60 × 10⁻¹⁶ C
B. 1.60 × 10⁻¹⁹ C
C. 1.60 × 10⁻²² C
D. 1.60 × 10⁻²⁵ C
Rationale: The elementary charge e = 1.60 × 10⁻¹⁹ C. Electrons carry −e and
protons carry +e.
,6. What is the equation for the number of charge carriers in a given charge?
A. n = Q × e
B. n = Q / e
C. n = e / Q
D. n = Q² / e
Rationale: The number of charge carriers is the total charge divided by the
elementary charge: n = Q/e.
7. The equation I = nAvq relates current to microscopic quantities. What does 'n'
represent?
A. Number of electrons
B. Number density of charge carriers (carriers per m³)
C. Neutron count
D. Number of atoms
Rationale: In I = nAvq, n is the number density of charge carriers (number per
cubic metre), A is cross-sectional area, v is drift velocity, and q is the charge on
each carrier.
8. In the equation I = nAvq, what does 'v' represent?
A. Voltage
B. Drift velocity of charge carriers
C. Volume
D. Velocity of light
Rationale: v is the mean drift velocity of the charge carriers along the conductor,
which is typically very small compared to the random thermal speeds of
electrons.
, 9. What is potential difference defined as?
A. The rate of flow of charge
B. The work done per unit charge
C. The energy stored in a component
D. The resistance of a component
Rationale: Potential difference is defined as the work done (energy transferred)
per unit charge, V = W/Q, measured in volts (V).
10. Which equation correctly defines resistance?
A. R = V × I
B. R = V / I
C. R = I / V
D. R = V × I²
Rationale: Resistance is defined as the ratio of potential difference across a
component to the current through it: R = V/I. The unit is the ohm (Ω).
11. What is Ohm's Law?
A. Current is always directly proportional to voltage
B. For an ohmic conductor at constant temperature, current is directly
proportional to potential difference
C. Resistance increases with temperature
D. Voltage equals current squared times resistance
Rationale: Ohm's Law states that for an ohmic conductor at constant
temperature, the current through it is directly proportional to the potential
difference across it, so V = IR.
PRACTICE EXAM WITH WELL ELABORATED AND
MOST TESTED REAL PRACTICE QUESTIONS AND
100% CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES PLUS EXPERT ANSWER KEY
2026-2027 Q&A 100% GUARANTEED PASS A+ INSTANT
DOWNLOAD PDF
1. What is the definition of electric current?
A. The flow of electrons around a circuit
B. The rate of flow of charge
C. The energy transferred per unit charge
D. The potential difference across a component
Rationale: Current is defined as the rate of flow of charge, I = ΔQ/Δt. It is
measured in amperes (A), where 1 A = 1 C s⁻¹.
2. Which equation correctly relates current, charge, and time?
A. I = Q × t
B. I = Q / t
C. I = t / Q
D. I = Q² / t
Rationale: Current is the rate of flow of charge, so I = Q/t, where Q is charge in
coulombs and t is time in seconds.
,3. What is the conventional direction of current in a circuit?
A. The direction of electron flow
B. The direction positive charge would flow, from positive to negative
C. The direction of neutron flow
D. Random in all directions
Rationale: Conventional current is defined as the direction in which positive
charge would flow, from the positive terminal to the negative terminal of a
source.
4. In a metal wire, what are the actual charge carriers?
A. Protons
B. Electrons
C. Positive ions
D. Neutrons
Rationale: In metals, current is carried by free electrons (delocalised electrons)
which move in the opposite direction to conventional current.
5. The elementary charge is approximately:
A. 1.60 × 10⁻¹⁶ C
B. 1.60 × 10⁻¹⁹ C
C. 1.60 × 10⁻²² C
D. 1.60 × 10⁻²⁵ C
Rationale: The elementary charge e = 1.60 × 10⁻¹⁹ C. Electrons carry −e and
protons carry +e.
,6. What is the equation for the number of charge carriers in a given charge?
A. n = Q × e
B. n = Q / e
C. n = e / Q
D. n = Q² / e
Rationale: The number of charge carriers is the total charge divided by the
elementary charge: n = Q/e.
7. The equation I = nAvq relates current to microscopic quantities. What does 'n'
represent?
A. Number of electrons
B. Number density of charge carriers (carriers per m³)
C. Neutron count
D. Number of atoms
Rationale: In I = nAvq, n is the number density of charge carriers (number per
cubic metre), A is cross-sectional area, v is drift velocity, and q is the charge on
each carrier.
8. In the equation I = nAvq, what does 'v' represent?
A. Voltage
B. Drift velocity of charge carriers
C. Volume
D. Velocity of light
Rationale: v is the mean drift velocity of the charge carriers along the conductor,
which is typically very small compared to the random thermal speeds of
electrons.
, 9. What is potential difference defined as?
A. The rate of flow of charge
B. The work done per unit charge
C. The energy stored in a component
D. The resistance of a component
Rationale: Potential difference is defined as the work done (energy transferred)
per unit charge, V = W/Q, measured in volts (V).
10. Which equation correctly defines resistance?
A. R = V × I
B. R = V / I
C. R = I / V
D. R = V × I²
Rationale: Resistance is defined as the ratio of potential difference across a
component to the current through it: R = V/I. The unit is the ohm (Ω).
11. What is Ohm's Law?
A. Current is always directly proportional to voltage
B. For an ohmic conductor at constant temperature, current is directly
proportional to potential difference
C. Resistance increases with temperature
D. Voltage equals current squared times resistance
Rationale: Ohm's Law states that for an ohmic conductor at constant
temperature, the current through it is directly proportional to the potential
difference across it, so V = IR.
