PHYSICS
1.
___________charges repel each other
2.
A charged ebonite rod has
________charge and charged glass rod has ___________charge.
3.
Positive electrification is due to
____________of electrons as compared to __________
4.
Mercury is a ____________conductor while __________is an
insulator.
5.
When a positively charged rod is
brought near the cap of an uncharged gold leaf electroscope, the charge induced
on the cap is _______________and _____________on the leaf, therefore the
leaf______________
Q1.
What are free electrons
Q1
What is static electricity?
Q3
How do the bodies rubbed together
acquire charge
Q4 Why is it not possible to charge an
insulator by induction?
Q5 How is sparking caused?
Q6 What causes lightning?
Q7
What is lightning conductor?
Q8
What is cgs unit of charge?
Q9
You are provided negatively charged
gold leaf electroscope. State and explain what happens when:
a.
A glass rod rubbed with silk is
brought near the cap
b.
An ebonite rod rubbed with fur is
brought near the cap
c.
A glass rod rubbed with silk is
rolled over the cap
Q10
An ebonite rod rubbed with fur is
rolled over the cap
A charge of 8600 coulomb flows
through an electric circuit in 2 min and 40secs. Calculate the magnitude of
current in circuit?
Q11.
Calculate the no of electrons that
would pass per second through the wire when 1 amp current flows in it.
1Q12.
What is the electric potential at a
point in a electric field when 24 j work is done in moving a charge of 96 col
from infinity?
Q13.
Define Potential difference?
Q14.
On what factors does resistance of
a conductor depends upon?
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