✓ Board-verified
Science · 2023 · 3 marks
CBSE 2023 · Region 5 · Set 1 · Q32
(a) (i) A straight cylindrical conductor is suspended with its axis perpendicular to the magnetic field of a horse-shoe magnet. The conductor gets…
(i)
A straight cylindrical conductor is suspended with its axis perpendicular to the magnetic field of a horse-shoe magnet. The conductor gets displaced towards left when a current is passed through it. What will happen to the displacement of the conductor if the
(1)
current through it is increased ?
(2)
horse-shoe magnet is replaced by another stronger horse-shoe magnet ?
(3)
direction of current through it is reversed ?
(ii)
Name and state the rule for determining the direction of force on a current carrying conductor in a magnetic field.
Draw the pattern of the magnetic field produced around a vertical current carrying straight conductor passing through a horizontal cardboard. Mark the direction of current and the magnetic field lines. Name and state the rule which is used to determine the direction of magnetic field associated with a current carrying conductor.
Marking-scheme solution
(a) (i) ($\displaystyle 1$) Increased.
(2) Increased.
(3) The direction of displacement is reversed
(ii) • Flemings left-hand rule - According to this rule, stretch the thumb, forefinger and middle finger of left hand such that they are mutually perpendicular. If the first finger points in the direction of magnetic field and the second finger in the direction of current, then the thumb will point in the direction of motion or the force acting on the conductor.
Alternate answer of the statement
All the physical quantities mentioned in the diagram should be perpendicular to each other.
•
Pattern
Direction of current
Magnetic field direction
Right hand thumb Rule
Imagine that we are holding a current carrying straight conductor in our right hand such that the thumb points towards the direction of current. Then our finger will wrap around the conductor in the direction of the field lines of the magnetic field.
Alternate answer of the statement:
All Magnetic Effects of Electric Current questions2023 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 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.