Electric Charges and Fields

1. Two charges 3x $10^{-5}$  C and 5x $10^4$   C are placed at a distance 10 cm from each other. Find the value of electrostatic force acting between them.

•  $13.5\times10^{11}$ N 

•  $40\ \times\ 10^{11^{ }}$  

•  $180\times10^9$  

•  $13.5\times10^{10}$  

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

What is the S. I. unit of electric flux?

• $\frac{N}{C}m^2$

• $\frac{N}{m^2}C^2$

• $N\ m^2$

• $\frac{N}{m^2}C^{ }$

What is the value of minimum force acting between two charges placed at 1 m apart from each other

• $K\ e$

• $K\ e^2$

• $\frac{Ke}{4}$

• $\frac{Ke^2}{9}$

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

A glass rod acquires charge by rubbing it with silk cloth. The charge on glass rod is due to :

• Conduction

• Induction

• Radiation

• Friction

For a point charge, the graph between electric field versus distance is given by :

• 
• 
• 
• 

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NGSS.HS-PS2-4

NGSS.HS-PS3-5

What will be the value of electric field at the centre of the electric dipole : -

• Zero

• Equal to the electric field due to one charge at centre

• Twice the electric field due to one charge at centre

• half the value of electric field due to one charge at centre

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Electric field lines contracts lengthwise, It shows

• repulsion between same charges

• Attraction between apposite charges

• No relation between force & contraction.

• Electric field lines does not moves on straight path.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

On charging a neutral Balloon its size -

• Increases

• Decreases

• Remains same

• No relation between charge & size

Charge Q is kept in a sphere of 5 cm first than it is kept in a cube of side 5 cm. the outgoing flux will be-

• More in case of sphere

• More in case of cube

• Same in both cases

• None of the above

Which Quantity is vector Quantity among the following -

• Electric flux

• Electric field Intensity

• Electric Potential

• Electric charge

Tags

NGSS.HS-PS2-4

NGSS.HS-PS2-5

NGSS.HS-PS3-5