Challenge yourself with these 10 puzzles on static electricity and related concepts!
Puzzle 1: What happens when a glass rod is rubbed with silk?
Hint: Focus on electron transfer between materials.
Answer: The glass rod loses electrons and becomes positively charged, while the silk gains electrons and becomes negatively charged.
Puzzle 2: What charge does an ebonite rod acquire when rubbed with fur?
Hint: Which material attracts electrons more strongly?
Answer: The ebonite rod gains electrons and becomes negatively charged, while the fur becomes positively charged.
Puzzle 3: What happens to the leaves of a gold leaf electroscope when a charged object is brought near?
Hint: Think about how like charges interact.
Answer: The leaves diverge because like charges repel.
Puzzle 4: Why does rubbing objects transfer charge?
Hint: Consider electron movement between materials.
Answer: Rubbing objects allows electrons to move from one material to another, depending on their electron affinity.
Puzzle 5: How can you use a gold leaf electroscope to identify the type of charge?
Hint: Compare the reaction with a known charge.
Answer: Bring a charged object near the electroscope. If the divergence increases, the charge is the same as the object used for charging; if it decreases, the charge is opposite.
Puzzle 6: What is the charge on silk after rubbing it with glass?
Hint: Which material gains electrons?
Answer: Silk becomes negatively charged because it gains electrons from the glass rod.
Puzzle 7: Why do ebonite rods attract small pieces of paper after being rubbed with fur?
Hint: Think about induced charges.
Answer: The ebonite rod induces a charge on the paper, causing attraction due to opposite charges.
Puzzle 8: How can a charged rod be discharged safely?
Hint: Consider grounding.
Answer: A charged rod can be discharged by connecting it to the ground, allowing excess charge to flow away.
Puzzle 9: What happens to the charge on a glass rod if touched by hand?
Hint: Think about grounding effects.
Answer: The charge on the glass rod dissipates as it is transferred to the ground through the hand.
Puzzle 10: Why do like charges repel?
Hint: Consider the electric force.
Answer: Like charges repel due to the repulsive electric force between them.
MCQ Quiz - Dry Cell and Electric Current MCQ Quiz - Dry Cell and Electric Current 1. What type of energy is converted into electrical energy in a dry cell? A. Mechanical energy B. Chemical energy C. Solar energy D. Nuclear energy 2. Which terminal of the dry cell is the zinc casing connected to? A. Negative terminal B. Positive terminal C. Neutral terminal D. Both terminals 3. What is the role of the electrolyte in a dry cell? A. Acts as a positive terminal B. Facilitates ion flow C. Acts as a resistor D. Absorbs electricity 4. In which direction do...
Comments
Post a Comment