10 Question-Answer on electric charges

10 Question-Answer on electric charges | Learn Physics

10 Question-Answer on electric charges

1. Two point charges certain distance apart in air repel each other with a force F. A glass plate is introduced between the charges. The force becomes F’, where

(a) F’ < F

(b) F’ =F

(d) Data is insufficient

Ans: ( a)

2. Force between two charges separated by a certain distance in air is F. if each charge were doubled and distance between them also doubled , force would be:

(a) F

(b) 2F

(d) F/4

Ans: (a)

3. An uncharged insulted conductor A is brought near a charged insulted conductor B.

(a) The charge and potential of B, both remain constant

(b) Both change

(d) The charge remains constant, but potential of B increases

Ans: (c)

4. Two charges are placed a certain distance apart. A metallic sheet is placed between them. What will happen to the force between the charges?

(a) Increase

(b) Decrease

(d) Either ‘a’ or ‘b’

Ans: ( c)

5. The distinction between conductors, insulators and semiconductors is largely concerned with

(a) Their ability to conduct current

(b) The type of crystal lattice

(d) Relative widths of their energy gaps

Ans: (d)

6. A cylindrical conductor is placed near another positively charged conductor. The net charge acquired by the cylindrical conductor will be:

(a) Positive only

(b) Negative only

(d) Either positive or negative.

Ans: (c)

7. Two spheres A and B of exactly same mass are given equal positive and negative charges respectively. Their masses after charging

(a) Remain unaffected

(b) Mass of A > mass of B

(d) Nothing can be said

Ans: (c)

8. The distance between two point charges is increased by 10% . the force of intraction

(a) Increased by 10%

(b) decreased by 10%

(d) decreased by21%

Ans: ( c)

9. What happens when some charge is placed on a soap bubble?

(a) Its radius decreases

(b) Its radius increases

(d) None of above

Ans: (b)

10. A positively charged rod is brought near uncharged conductor. If the rod is then suddenly withdrawn, the charge left on the conductor will be:

(a) Positive

(b) Negative

(d) Not sure

Ans: ( c)

Comments

Biography of Manohar Joshi

Biography of Manohar Joshi: Manohar Gajanan Joshi is an Indian politician who has played a significant role in Maharashtra state politics. Born on December 2, 1937, in a middle-class family in a village called Ganeshpeth in Ratnagiri district, Maharashtra, Joshi's journey into politics was marked by his association with the Shiv Sena, a right-wing regional political party in India. Joshi's political career began in the late 1960s when he joined the Shiv Sena, which was then led by its founder, Bal Thackeray. He quickly rose through the ranks of the party due to his organizational skills, dedication, and ideological alignment with the party's principles, which advocated for the interests of the Marathi-speaking population of Maharashtra. In 1972, Manohar Joshi won his first election to the Brihanmumbai Municipal Corporation (BMC), marking the beginning of his electoral career. He served as a corporator in the BMC and later became the Mayor of Mumbai in 1976. Joshi's tenu...

Professor Cheiro Prophecies about India | 5 predictions Professor Kiro - Kiro made these amazing predictions for India

Professor Cheiro Prophecies: Here is Kiro made these amazing predictions for India: Professor Kiro was born in November 1866 in England. At the age of 17, Kiro came to Mumbai and met astrologer Vednarayan Joshi. With his advice, he will reach the Himalayas, Kashmir, Ladakh and Varanasi. From here, he studied astrology extensively. Kiro made many predictions in his life, which we are giving you here. Cheiro, whose real name was William John Warner, was a prominent Irish astrologer and palmist who gained fame in the late 19th and early 20th centuries. He was known for his accurate predictions and was consulted by various prominent figures of his time, including Mark Twain, Oscar Wilde, and Thomas Edison. Cheiro also made some predictions related to India. Parada Kahanee One of his notable predictions about India was made in his book "Cheiro's World Predictions," published in 1926. In this book, he wrote about the possibility of India gaining independence from British...

Biography of Abbie Hoffman | Early Life and Political Activism - Later Years and Personal Life - Legacy of Abbie Hoffman

Biography of Abbie Hoffman: Abbie Hoffman (November 30, 1936 – April 12, 1989) was an American political and social activist known for his involvement in the counterculture and anti-war movements of the 1960s and 1970s. He was a key figure in the Youth International Party (Yippies) and was known for his theatrical and often humorous protests. Here is a brief biography of Abbie Hoffman: Early Life of Abbie Hoffman: 1. Birth: Abbie Hoffman was born on November 30, 1936, in Worcester, Massachusetts, USA. 2. Education: He attended Brandeis University, where he earned a degree in psychology in 1959. Parada Kahanee Political Activism: 1. Civil Rights Movement: Hoffman began his activism by participating in the civil rights movement during the early 1960s. 2. Youth International Party (Yippies): In 1967, Hoffman, along with Jerry Rubin and others, co-founded the Yippies, a countercultural and anti-authoritarian political party known for its unconventional and theatrical protes...

News-Biography-History-Tech

Search This Blog