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# 10th Class Chapter 4 Physics Short Questions

An important facility for 10th class students preparing for short questions physics 10th class chapter 4 of BISE. Get hundreds of questions to prepare and get better marks in 10th physics ### 0

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##### Question: 1
Differentiate between fixed and variable capacitors.
1-18
Fixed capacitor: Fixed capacitor is a capacitor whose capacitance remains fixed. For example; Paper capacitor and Mica capacitor.
##### Question: 2
What is meant by electrostatic induction?
2-18
In the presence of charge body an insulated conductor develop positive charge at one end and negative charge at the other end this process is called electrostatic induction.
##### Question: 3
Is electric intensity a vector quantity?
3-18
Electric field intensity being a force is a vector quantity.
##### Question: 4
Difference between Electric potential and Potential energy.
4-18
Electric potential :
Electric potential is a characteristic of the field of source charge and is independent of a test charge that may be placed in the field.
##### Question: 5
What is the unit of electric potential or electric energy?
5-18
Electron volt is another and more useful unit of electric potential or electric energy.
##### Question: 6
Define coulomb?
6-18
If one ampere current flow from a wire in one second then its charge willbe one coulomb.
##### Question: 7
Rubber tires get charged form friction with the road what is the polarity of the charge.
7-18
The rubber and road will get opposite charges.The rubber tires get negatively charged.
##### Question: 8
How would you define potential difference between two points?
8-18
Potential difference between two points as the energy supplied by a unit charge as it moves from on point to the other in the direction of the field. It unit is volt.
##### Question: 9
What is meant by electric field and electric intensity?
9-18
Electric field. The electric field is a region around a charge in which it exerts electrostatic force on another charges.
##### Question: 10
10-18
If one coulomb of charge given to the plates of a capacitor produces potential difference on one volt between the plates of the capacitor then its capacitance would be one farad.
Farad is a large unit, usually we use a smaller unit called micro farad and bico farad etc.
##### Question: 11
What do you mean by the capacitance of capacitor? Define units of capacitance.
11-18
Capacitance. the ability of a capacitor to store charge is called capacitance. It is given by thr ratio of charge and the electric potential as. C= Q/V
SI unit of capacitance is farad.
##### Question: 12
Define volt.
12-18
If the potential energy of one coulomb of charge at a oint int he electric field is one joule. the potential of that point will be one volt.
##### Question: 13
What the body of an aeroplane get charged during flight?
13-18
During flight, body of an aeroplane gets charged due to frictional forces.
##### Question: 14
Define electric field intensity. Also write its mathematical expression and S.I unit.
14-18
The electric field intensity at any point is defined as the force acting on unit positive charge placed at the point.
##### Question: 15
How electric field helpful for some animals?
15-18
Some animals produce electric field to detect nearby objects that affect the field.
##### Question: 16
Define electrostatic potential also write its expression?
16-18
Electrostatic potential at a point in an electric field is equal to the amount of work done in bringing a unit positive charge from infinity to that point.
Mathematically expression: V = W/q
SI unit of electrostatic potential is volt which is equal to JC-1
##### Question: 17
Define capacitance of capacitors. Write its expression and S.I. unit.