GLOBAL INTERNATIONAL SCHOOL(C.B.S.
E)
DPT
Class X C & D Subject: Physics Marks:30
1. With the help of a labelled circuit diagram wire describe an activity to illustrate the pattern of the
magnetic field lines around a straight current carrying long conducting wire .
i) Name the rule that is used to find the direction of magnetic field associated with a current carrying
conductor.
ii) Is there a similar magnetic field produced around a thin beam of moving
(a) alpha particles and
(b) neutrons? Justify your answer
2. PQ is a current carrying conductor in the plane of the paper as shown in the figure below.
(i) Find the directions of the magnetic fields produced by it at points R and S?
(ii) Given r1> r2, where will the strength of the magnetic field be larger? Give reasons.
(iii) If the polarity of the battery connected to the wire is reversed, how would the direction of the
magnetic field be changed?
GLOBAL INTERNATIONAL SCHOOL(C.B.S.E)
DPT
Class X A & B Subject: Physics Marks:30
1. With the help of a labelled circuit diagram wire describe an activity to illustrate the pattern of the
magnetic field lines around a straight current carrying long conducting wire .
i) Name the rule that is used to find the direction of magnetic field associated with a current carrying
conductor.
ii) Is there a similar magnetic field produced around a thin beam of moving
(a) alpha particles and
(b) neutrons? Justify your answer
2. PQ is a current carrying conductor in the plane of the paper as shown in the figure below.
(i) Find the directions of the magnetic fields produced by it at points R and S?
(ii) Given r1> r2, where will the strength of the magnetic field be larger? Give reasons.
(iii) If the polarity of the battery connected to the wire is reversed, how would the direction of the
magnetic field be changed?
(iv) Explain the rule that is used to find the direction of the magnetic field for a straight current carrying
conductor
3. (a) State Fleming’s Left-hand rule.
(b) List three characteristic features of the electric current used in our homes.
(c) What is a fuse ? Why is it called a safety device ?
(d) Why is it necessary to earth metallic electric appliances ?
4. A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it.
He sprinkles some iron filings uniformly around the bar magnet. Then he taps the drawing board gently
and observes that the iron filings arrange themselves in a particular pattern.
(a) Why do iron filings arrange in a particular pattern ?
(b) What does the crowding of iron filings at the ends of the magnet indicate ?
(c) What do the lines, along which the iron filings align, represent ?
(d) If the student places a cardboard horizontally in a current carrying solenoid and repeats the above
activity, in what pattern would the iron filings arrange ? State the conclusion drawn about the magnetic
field based on the observed pattern of the lines.
5. Explain the horse shoe magnet experiment in detail.
6. How can we conclude that circumfrence of the circular loop has more magnetic field when current
passed through it. Expain with diagram and mathematical expression.
(iv) Explain the rule that is used to find the direction of the magnetic field for a straight current carrying
conductor
3. (a) State Fleming’s Left-hand rule.
(b) List three characteristic features of the electric current used in our homes.
(c) What is a fuse ? Why is it called a safety device ?
(d) Why is it necessary to earth metallic electric appliances ?
4. A student fixes a sheet of white paper on a drawing board. He places a bar magnet in the centre of it.
He sprinkles some iron filings uniformly around the bar magnet. Then he taps the drawing board gently
and observes that the iron filings arrange themselves in a particular pattern.
(a) Why do iron filings arrange in a particular pattern ?
(b) What does the crowding of iron filings at the ends of the magnet indicate ?
(c) What do the lines, along which the iron filings align, represent ?
(d) If the student places a cardboard horizontally in a current carrying solenoid and repeats the above
activity, in what pattern would the iron filings arrange ? State the conclusion drawn about the magnetic
field based on the observed pattern of the lines.
5. Explain the horse shoe magnet experiment in detail.
6. How can we conclude that circumfrence of the circular loop has more magnetic field when current
passed through it. Expain with diagram and mathematical expression.
