Worksheet: Electricity and Circuits | IGCSE Cambridge Science for Year 6 - Class 6 PDF Download

Multiple Choice Questions (MCQs)

Q1. What does the rope represent in the rope loop model?

A) Resistance

B) Electric charge flow

C) The power source

D) Light energy

Answer: B) Electric charge flow

Q2. Who does the teacher represent in this model?

A) A switch

B) An insulator

C) The cell

D) A lamp

Answer: C) The cell

Q3. What is the effect of students gripping the rope tighter in the model?

A) Decreases resistance

B) Increases resistance

C) Reduces the flow of electric charge

D) Both B and C are correct

Answer: D) Both B and C are correct

Q4. Which component is used to measure the current in a circuit?

A) Ammeter

B) Voltmeter

C) Resistor

D) Capacitor

Answer: A) Ammeter

Q5. How does adding more cells to a circuit affect the brightness of the lamps?

A) Decreases brightness

B) Increases brightness

C) No effect on brightness

D) Initially increases then decreases

Answer: B) Increases brightness

Fill in the Blanks

Q1. Electric current is the amount of __________ that flows through a circuit over a period of time.

Answer: charge

Q2. Changing components in a circuit affects the                    . Adding more cells increases energy supply, causing more current to flow. 
Answer: current

Q3. __________ is the opposition to the flow of electric current.

Answer: Resistance

Q4. A __________ circuit has only one loop.

Answer: series

Q5. A lamp converts electrical energy into __________ and __________.

Answers: heat, light

True or False

Q1. In a series circuit, the brightness of each lamp decreases as more lamps are added, because the total resistance increases, which reduces the current flowing through the circuit.

Answer: True 

Q2. A closed switch in a circuit diagram allows electricity to flow.

Answer: True

Q3. Current is measured in amperes (amps) using a device called an ammeter.
Answer: True

Q4. Conductors are materials where electrons cannot move freely.

Answer: False (This describes insulators)

Q5. More cells in a circuit always increase the lamp's brightness without limitation.

Answer: False (Adding extra cells has a diminished effect as components heat up)

Match the Column

Match A - 2, B - 3, C - 1, D - 4, E-5

Explanation

Current (A) is measured in amperes (2).

Resistance (B) represents the opposition to the flow of electric charge (3).

Conductor (C) is a material that allows electrons to move freely (1).

Insulator (D) is a material that restricts the movement of electrons (4).
Ammeter(E) is a device used to measure current(5).