electricity-magnetism-l2 MCQ — 10 अभ्यास प्रश्न उत्तर सहित

10 electricity-magnetism-l2 बहुविकल्पीय प्रश्नों का अभ्यास करें, विस्तृत उत्तर और व्याख्या सहित। RAS/RPSC परीक्षा की तैयारी के लिए आदर्श।

10 प्रश्न mathematics-science-reet

Q1. Which teacher instruction is safest for Devika's circuit activity?

A Touch a switchboard wire briefly to test current

B Use a household socket if the bulb is small

C Use only dry cells or batteries, not home sockets or open chargers Correct

D Remove insulation from all wires completely

Explanation

Safety is a concept, not a side note. NCERT explicitly says not to perform experiments with home or school power supply; Devika's activity should use only cells or batteries under teacher supervision.

Q2. Meena opens a torch with two cells. Which observation best explains why cell order matters?

A Both cells must have their positive terminals touching each other

B The cells work only if placed near a bar magnet

C The flat metal disc is always the positive terminal

D The positive terminal of one cell connects to the negative terminal of the next Correct

Explanation

This item checks a concrete torch observation. Meena should identify the terminal relation: the positive end of one cell connects to the negative end of the next, making a battery that can energise the circuit.

Q3. Asha says a compass works because its printed dial knows north. Which correction is best?

A The dial produces electric current in the needle

B The compass needle is a small magnet that indicates north-south direction Correct

C The plastic box attracts Earth's iron

D The switch inside the compass closes a circuit

Explanation

The correction should stay within magnetism. A freely suspended magnet rests north-south, and the compass needle is such a magnet; the printed dial only helps the user read that direction.

Q4. Which activity plan best fits the REET classroom meaning of electricity and magnetism?

A Teacher dictates definitions; students copy ten times without objects

B Students test household mains wires to see which current is stronger

C Students memorise that all metals are magnetic and all plastics are useless

D Students use cells, switch, lamp and magnets to predict, test, sort and explain safely Correct

Explanation

The best activity follows the note narrative. Asha, Imran and Joseph handle safe cells and magnets, make predictions, observe outcomes and explain gaps, conductors, insulators and magnetic attraction in child-readable language.

Q5. Imran connects a cell, lamp and wires, but one wire end is loose. Why does the lamp not glow?

A The circuit path is incomplete, so current cannot flow through the lamp Correct

B The switch has become the source of current

C The cell has no positive and negative terminals

D The lamp glows only near a magnet

Explanation

NCERT defines the electrical circuit as a complete path for current. Imran's loose wire breaks that path, just like the open position of a switch, so the lamp cannot receive current through its filament.

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Q6. Assertion: A switch may be placed anywhere in a simple circuit. Reason: A switch either completes or breaks the circuit path.

A Both Assertion and Reason are true, and Reason explains Assertion

B Both are true, but Reason does not explain Assertion

C Assertion is true, Reason is false

D Assertion is false, Reason is true

Q7. Match List I with List II for a classroom sorting activity.

A Cell - path controller; Switch - energy source; Iron nail - insulator

B Cell - energy source; Switch - completes or breaks path; Iron nail - magnetic material

C Plastic scale - magnetic material; Compass - battery; Pole - current source

D Conductor - blocks current; Insulator - allows current; Magnet - no poles

Q8. Read the statements: (1) Metals are generally conductors. (2) Every conductor is attracted by a magnet. (3) Iron is a magnetic material. Which set is correct for Class 6-8 treatment?

A Only 1 and 2

B Only 2 and 3

C Only 1 and 3

D All 1, 2 and 3

Q9. Karan breaks a bar magnet into two pieces. Which statement should the teacher accept?

A One piece has only north pole and the other has only south pole

B Each smaller piece has both north and south poles

C Both pieces lose all magnetic property immediately

D The poles change into positive and negative terminals

Q10. Which official RBSE phrase most directly anchors the electricity-magnetism note for REET Level 2 Science?

A Magnetic force and electrostatic force under Force and Motion

B Ohm law and resistance formula

C Electromagnetic induction and generators

D Atomic model and chemical equations

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electricity-magnetism-l2 MCQ — 10 अभ्यास प्रश्न उत्तर सहित

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