✓ Board-verified
Science · 2026 · 5 marks
CBSE 2026 · Region 5 · Set 2 · Q39
(A) (i) List any two features of the electric current used in the houses of India. (ii) Write any two differences between direct current and an…
(A)(i)
List any two features of the electric current used in the houses of India.
(ii)
Write any two differences between direct current and an alternating current.
(iii)
How will you identify live wire and neutral wire in a domestic electric circuit ?
OR
(B)(i)
Why is fuse an important component in our electric circuits ?
(ii)
Distinguish between overloading and short-circuiting of a circuit.
(iii)
Giving reason explain what type of materials are used in fuse wires.
Marking-scheme solution
(i)
Features
Direction of current changes periodically/ alternating current.
Frequency of current supplied in our houses is $\displaystyle 50$ Hz.
(ii)
| Direct current | Alternating current | ||
| (I) | Flows in one direction | (I) Reverses its direction periodically. | |
| (II) | Sources : Cell / battery | (II) plant |
(iii)
Live wire has red insulation cover and neutral wire has black insulation cover.
(i)
Because it is a safety device, which prevents the damage to electric appliances and circuit caused due to overloading.
(ii)
| Over loading | Short circuiting |
| It is caused when too many appliances are connected to a single socket./ Due to accidental hike in the supply voltage. | It is caused due to direct contact of live wire with the neutral wire. |
(iii)
A piece of wire made of a metal or an alloy.
appropriate (low) melting point.
All Magnetic Effects of Electric Current questions2026 question paperNCERT solutions: Magnetic Effects of Electric CurrentPractice Magnetic Effects of Electric Current →
More from Magnetic Effects of Electric Current
- On the basis of the given circuit arrangement, answer the following questions: What happens to the rod AB when the key K is closed and why? Name and…2026
- Draw the pattern of magnetic field lines produced by a current carrying circular loop showing the direction of current in the loop and the direction…2022
- Name and state the rule to determine the direction of a: (i) magnetic field produced around a current carrying straight conductor. (ii) force…2024
- A rectangular loop ABCD carrying a current I is situated near a straight conductor XY, such that the conductor is parallel to the side AB of the loop…2024
- Draw a labelled diagram to show the pattern of magnetic field lines produced due to a current carrying straight conductor. Mark on it the direction…2024
- The magnetic field inside a long straight current carrying solenoid:2023
- AB is a coil of copper wire having a large number of turns. The ends of the coil are connected with a galvanometer as shown. When the north pole of a…2022
- AB is a coil of copper wire having a large number of turns. The ends of the coil are connected with a galvanometer as shown. When the north pole of a…2022
CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.