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ICSE Class 8 Static Electricity — practice questions

Explore 23 free Static Electricity questions in ICSE Class 8 Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Static Electricity questions and exercises with answers

Showing questions 1–23 of 23.

When isolated bodies charge by rubbing, their total electric charge?Read the answer and worked solution →Charge added to a conductor / an insulator respectively?Read the answer and worked solution →Why hold a metal rod by a dry plastic handle when charging it?Read the answer and worked solution →Charge transfers by direct contact between conducting bodies. Method?Read the answer and worked solution →A nearby charged body redistributes charge without touching. This is?Read the answer and worked solution →A gold-leaf electroscope is principally used to detect?Read the answer and worked solution →What conveys charge from an electroscope's knob to its leaves?Read the answer and worked solution →After charging by contact, electroscope leaves diverge due to?Read the answer and worked solution →The glass case around gold leaves chiefly protects them from?Read the answer and worked solution →Charged electroscope earthed, no other charge nearby. Leaves?Read the answer and worked solution →A building's lightning conductor chiefly provides?Read the answer and worked solution →Which material can provide a conducting lightning downlead?Read the answer and worked solution →Isolated neutral pair rubs. One turns positive. The other?Read the answer and worked solution →Identical metal spheres have equal opposite charges. They touch, then separate in isolation. Both?Read the answer and worked solution →An unknown body repels a positively charged test ball. Its net charge is?Read the answer and worked solution →A charged rod nears an initially neutral, isolated electroscope. No touch or sparks. Total charge?Read the answer and worked solution →An isolated electroscope was contact-charged; the source is gone. Divergent leaves prove which sign?Read the answer and worked solution →Neutral pith ball touches a charged rod, then repels. Why?Read the answer and worked solution →Earthing reduces an electroscope's charge. Charge conservation applies to?Read the answer and worked solution →Positive rod near neutral electroscope: earth, disconnect Earth, remove rod. Final sign?Read the answer and worked solution →Charged rod removed while electroscope stays earthed. Then disconnect Earth. Final charge?Read the answer and worked solution →Neutral metal spheres A,B touch on insulators. A positive rod nears A. Separate A,B before removing rod. Signs?Read the answer and worked solution →Isolated spheres share charge equally. Q,R neutral. P+ touches Q; leaves; Q touches R. Most charge?Read the answer and worked solution →

Worked practice questions

When isolated bodies charge by rubbing, their total electric charge?

  1. Remains constant overall
  2. Becomes positive in both
  3. Decreases with rubbing time
  4. Increases with rubbing time
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Correct answer: A. Remains constant overall

Rubbing transfers charge between the bodies without creating or destroying their total net charge.

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Charge added to a conductor / an insulator respectively?

  1. Stays localized in both
  2. Spreads; stays localized
  3. Stays localized; spreads
  4. Spreads in both materials
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Correct answer: B. Spreads; stays localized

Mobile charges distribute over a conductor's surface, while charge on an insulator remains near its location.

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Why hold a metal rod by a dry plastic handle when charging it?

  1. To reverse the metal's acquired charge
  2. To make the metal an insulator
  3. To supply charge from the handle
  4. To reduce charge leakage through the hand
Show answer and solution

Correct answer: D. To reduce charge leakage through the hand

An insulating handle reduces the conducting path from the metal through the hand to ground.

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