Question

SAVIO HIGH SCHOOL, AWANGKHUL
FIRST QUARTERLY EXAMINATION, 2021
CLASS-X SCIENCE
F.M.= 50
SECTION-A PHYSICS
1. Name any one of non-ohmic substance.
1
2. Define one volt.
1
3. Name the device that is used to change the resistance in the circuit. 1
4. Write the symbols of an electric fuse.
1
5. How much charge flows through a wire carrying 2.5A of current in 20
minutes
2
6. Draw a schematic diagram of motion of electrons under applied potential
difference.
2.
7. Define resistance of a conductor by using ohm's Law.
2.
8. Write three advantages of parallel combination over series combination 3
9. An aluminium wire of certain length has a resistance of 1002. What will be
its resistances after stretching to double its length?
3
SECTION-BCT​

Answer 1

Advantages of parallel combination over series combination are :

1) In parallel combination each appliance gets the full voltage.

2) If one appliance is switched on/of others are not affected.

3) The parallel circuit divide the current through the appliances. Each appliance gets proper current depending on its resistance.

4) In a parallel combination it is very easy to connect or disconnect a new appliance without affecting the working of other appliances.