Q)If air and cloud were good conductors of electricity, do you think lightning could occur?
Q) Explain A body A repels another body B, A attracts body C, C repels body D. It is given that body D is positively charged. What is the charge on the body B?
Q) What kind of electric charge is generated by rubbing of two different objects?
Answers
A repel B but attract C so A and B have same charges and C repel D so both of them have same charges but A and C attract each other so they have opposite charges. Here D have positive charge and B and D will have opposite charges so charge of B is negative
Depend on material if it will be +ve or - ve and charge is static charge
Q)If air and cloud were good conductors of electricity, do you think lightning could occur?
ans=> I think No. As you are aware, lightning occurs due to the phenomenon 'electric discharge' from highly charged clouds to the sink i.e Earth. If air is conducting, then the accumulated charge directly goes to ground. No discharge occurs.
Q) Explain A body A repels another body B, A attracts body C, C repels body D. It is given that body D is positively charged. What is the charge on the body B?
ans=> When we touch a charged object, our body conducts its charges to the earth. That is why a charged body loses its charge, if we touch it with our hand. This phenomenon is known as electric discharge.
Q) What kind of electric charge is generated by rubbing of two different objects?
The frictional charging process results in a transfer of electrons between the two objects that are rubbed together. Rubber has a much greater attraction for electrons than animal fur. As a result, the atoms of rubber pull electrons from the atoms of animal fur, leaving both objects with an imbalance of charge.