Conductors & Insulators — Homi Bhabha Class 6 Physics MCQs with Solutions
Free Homi Bhabha Class 6 Physics Conductors & Insulators MCQs with step-by-step solutions (10 questions). Part of Electricity and Magnetism. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Conductors & Insulators · easy · theory
Materials that allow electric current to pass through them are called …
A. Insulators
B. Conductors ✓ Correct
C. Magnets
D. Mirrors
Solution: Conductors let electric current pass through them.
Q2 — Conductors & Insulators · easy · theory
Materials that do NOT allow electric current to pass through them are called …
A. Conductors
B. Metals
C. Cells
D. Insulators ✓ Correct
Solution: Insulators do not let electric current pass through them.
Q3 — Conductors & Insulators · easy · theory
Which of these is a good conductor of electricity?
A. A plastic ruler
B. A rubber band
C. An iron nail ✓ Correct
D. A dry wooden stick
Solution: An iron nail is made of metal, and metals are good conductors of electricity.
Q4 — Conductors & Insulators · easy · theory
Which of these is an insulator?
A. A copper wire
B. An iron key
C. A silver spoon
D. A plastic comb ✓ Correct
Solution: A plastic comb is an insulator, so it does not let current pass through it.
Q5 — Conductors & Insulators · medium · theory
Why are electric wires covered with plastic or rubber on the outside?
A. Because plastic and rubber are insulators and keep us safe from shock ✓ Correct
B. To make them colourful
C. To make the wires heavier
D. To help them carry more current
Solution: The plastic or rubber cover is an insulator, so it stops the current from reaching us and keeps us safe.
Q6 — Conductors & Insulators · medium · theory
The metal (usually copper) inside a wire is used because copper is a good …
A. Insulator
B. Magnet
C. Conductor ✓ Correct
D. Mirror
Solution: Copper is a good conductor, so current flows easily through the metal inside the wire.
Q7 — Conductors & Insulators · medium · theory
You replace a wire in a working circuit with one of these. Which one would still let the bulb glow?
A. A plastic scale
B. An iron nail ✓ Correct
C. A dry wooden pencil
D. A rubber eraser
Solution: Only the iron nail is a conductor, so only it lets current flow and keeps the bulb glowing.
Q8 — Conductors & Insulators · medium · theory
Most metals, such as copper, iron and aluminium, are …
A. Non-metals
B. Good conductors of electricity ✓ Correct
C. Always magnets
D. Good insulators
Solution: Most metals are good conductors, letting electric current pass through them easily.
Q9 — Conductors & Insulators · hard · theory
Which of these statements is TRUE?
A. Our body can conduct electricity, so touching wires with wet hands is dangerous ✓ Correct
B. Wood is a good conductor
C. Copper is an insulator
D. Our body cannot conduct electricity at all
Solution: The human body can conduct electricity, which is why touching wires, especially with wet hands, can give a dangerous shock.
Q10 — Conductors & Insulators · hard · theory
Why is the outer cover of a switch made of plastic while the parts inside are made of metal?
A. Plastic (an insulator) is safe to touch, and metal (a conductor) carries the current ✓ Correct
B. Plastic is a conductor and metal is an insulator
C. Both plastic and metal are insulators
D. Both plastic and metal are conductors
Solution: The plastic cover is an insulator that is safe to touch, while the metal inside is a conductor that lets the current flow.