Write true or false for each statement:
(a) The number of electrons and protons in an atom are same.
(b) If the charge is not in motion, we call it static electricity.
(c) Human body is a conductor of electricity.
(d) When an ebonite rod is rubbed with fur, the electrons move from ebonite to fur.
(e) When a glass rod is rubbed with the dry silk cloth, the electrons move from glass to silk.
(f) The cap of gold leaf electroscope is made of copper.
(g) If a glass rod rubbed with silk is brought near the cap of a negatively charged electroscope, the divergence of leaves will decrease.
(h) In induction, a positively charged body can make an uncharged body positively charged.
(i) A lighting conductor saves the building from lighting.
(j) When a comb is rubbed with dry hair both comb and paper get similarly charged.
(k) A glass rod rubbed with silk repels an ebonite rod rubbed with fur.
(l) When an ebonite rod is rubbed with fur, the protons move from the ebonite rod to the fur.
(m) A conductor has a large number of free electrons.
(n) An ebonite rod can be charged by touching it with a charged copper rod.
(o) To find whether a body is charged or not, an uncharged electroscope is used.
(p) To find whether the charge on a body is positive or negative, an uncharged electroscope is used.
(q) If a negatively charged rod is brought near a negatively charged pith ball electroscope, the pith ball will be stuck with the rod.
Write true or false for each statement:
(a) The number of electrons and protons in an atom are same.
(b) If the charge is not in motion, we call it static electricity.
(c) Human body is a conductor of electricity.
(d) When an ebonite rod is rubbed with fur, the electrons move from ebonite to fur.
(e) When a glass rod is rubbed with the dry silk cloth, the electrons move from glass to silk.
(f) The cap of gold leaf electroscope is made of copper.
(g) If a glass rod rubbed with silk is brought near the cap of a negatively charged electroscope, the divergence of leaves will decrease.
(h) In induction, a positively charged body can make an uncharged body positively charged.
(i) A lighting conductor saves the building from lighting.
(j) When a comb is rubbed with dry hair both comb and paper get similarly charged.
(k) A glass rod rubbed with silk repels an ebonite rod rubbed with fur.
(l) When an ebonite rod is rubbed with fur, the protons move from the ebonite rod to the fur.
(m) A conductor has a large number of free electrons.
(n) An ebonite rod can be charged by touching it with a charged copper rod.
(o) To find whether a body is charged or not, an uncharged electroscope is used.
(p) To find whether the charge on a body is positive or negative, an uncharged electroscope is used.
(q) If a negatively charged rod is brought near a negatively charged pith ball electroscope, the pith ball will be stuck with the rod.
(a) The number of electrons and protons in an atom are same.
Answer. True.
(b) If the charge is not in motion, we call it static electricity.
Answer. True.
(c) Human body is a conductor of electricity.
Answer. True.
(d) When an ebonite rod is rubbed with fur, the electrons move from ebonite to fur.
Answer. False.
Correct: When an ebonite rod is rubbed with fur, the electrons move from fur to ebonite.
(e) When the glass rod is rubbed with a dry silk cloth, the electrons move from glass to silk.
Answer. True.
(f) The cap of gold leaf electroscope is made of copper.
Answer. False.
Correct: The cap of gold leaf electroscope is of brass.
(g) If a glass rod rubbed with silk is brought near the cap of a negatively charged electroscope, the divergence of leaves
will decrease.
Answer. True.
(h) In induction, a positively charged body can make an uncharged body positively charged.
Answer. False
Correct: In induction, a positively charged body can make an uncharged body negatively charged.
(i) A lightning conductor saves the building from lighting.
Answer. True.
(j) When a comb is rubbed with dry hair both comb and paper get similarly charged.
Answer. False.
Correct: A comb rubbed with hair and brought near pieces of paper attracts them, because both have dissimilar
charges.
(k) A glass rod rubbed with silk repels an ebonite rod rubbed with fur.
Answer. False.
Correct: A glass rod rubbed with silk attract an ebonite rod rubbed with fur.
(l) When an ebonite rod is rubbed with fur, the protons move from the ebonite rod to the fur.
Answer. False.
Correct: When an ebonite rod is rubbed with fur, the free electrons move from the fur to the ebonite rod.
(m) A conductor has a large number of free electrons.
Answer. True.
(n) An ebonite rod can be charged by touching it with a charged copper rod.
Answer. False.
Correct: An ebonite rod can be charged by not touching it with a charged copper rod, will be charged by induction
method.
(o) To find whether a body is charged or not, an uncharged electroscope is used.
Answer. True.
(p) To find whether the charge on a body is positive or negative, an uncharged electroscope is used.
Answer. False.
Correct: To find whether the charge on a body is positive or negative, a charged electroscope is used.
(q) If a negatively charged rod is brought near a negatively charged pith ball electroscope, the pith ball will be stuck with
the rod.
Answer. False.
Correct: If a negatively charged rod is brought near a positively charged pith ball electroscope, the pith ball will be stuck
with the rod.
(a) The number of electrons and protons in an atom are same.
Answer. True.
(b) If the charge is not in motion, we call it static electricity.
Answer. True.
(c) Human body is a conductor of electricity.
Answer. True.
(d) When an ebonite rod is rubbed with fur, the electrons move from ebonite to fur.
Answer. False.
Correct: When an ebonite rod is rubbed with fur, the electrons move from fur to ebonite.
(e) When the glass rod is rubbed with a dry silk cloth, the electrons move from glass to silk.
Answer. True.
(f) The cap of gold leaf electroscope is made of copper.
Answer. False.
Correct: The cap of gold leaf electroscope is of brass.
(g) If a glass rod rubbed with silk is brought near the cap of a negatively charged electroscope, the divergence of leaves
will decrease.
Answer. True.
(h) In induction, a positively charged body can make an uncharged body positively charged.
Answer. False
Correct: In induction, a positively charged body can make an uncharged body negatively charged.
(i) A lightning conductor saves the building from lighting.
Answer. True.
(j) When a comb is rubbed with dry hair both comb and paper get similarly charged.
Answer. False.
Correct: A comb rubbed with hair and brought near pieces of paper attracts them, because both have dissimilar
charges.
(k) A glass rod rubbed with silk repels an ebonite rod rubbed with fur.
Answer. False.
Correct: A glass rod rubbed with silk attract an ebonite rod rubbed with fur.
(l) When an ebonite rod is rubbed with fur, the protons move from the ebonite rod to the fur.
Answer. False.
Correct: When an ebonite rod is rubbed with fur, the free electrons move from the fur to the ebonite rod.
(m) A conductor has a large number of free electrons.
Answer. True.
(n) An ebonite rod can be charged by touching it with a charged copper rod.
Answer. False.
Correct: An ebonite rod can be charged by not touching it with a charged copper rod, will be charged by induction
method.
(o) To find whether a body is charged or not, an uncharged electroscope is used.
Answer. True.
(p) To find whether the charge on a body is positive or negative, an uncharged electroscope is used.
Answer. False.
Correct: To find whether the charge on a body is positive or negative, a charged electroscope is used.
(q) If a negatively charged rod is brought near a negatively charged pith ball electroscope, the pith ball will be stuck with
the rod.
Answer. False.
Correct: If a negatively charged rod is brought near a positively charged pith ball electroscope, the pith ball will be stuck
with the rod.
