Electric Charge and Its Properties
Physics ⇒ Electricity and Magnetism
Electric Charge and Its Properties starts at 7 and continues till grade 12.
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See sample questions for grade 10
A body has a charge of -3.2 × 10-19 C. How many excess electrons does it have?
A body has a charge of 8 × 10-19 C. How many excess electrons does it have? (Charge of one electron = 1.6 × 10-19 C)
A metal sphere has a charge of +4.8 × 10-19 C. How many protons does this correspond to? (Charge of one proton = 1.6 × 10-19 C)
A neutral atom becomes positively charged when it _______.
Describe the process of charging by induction.
Describe what happens when a negatively charged rod is brought near, but does not touch, a neutral metal sphere.
Explain the difference between conductors and insulators in terms of electric charge movement.
Explain why a charged object can attract a neutral object.
Explain why rubbing a balloon on your hair can make the balloon stick to a wall.
If 1 C of charge contains approximately 6.25 × 1018 electrons, how much charge is carried by 1 electron?
If a plastic rod is rubbed with wool, what type of charge does the plastic rod acquire?
What is the law of conservation of electric charge?
Which law states that the force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them?
A certain object has a net charge of 4.8 × 10-18 C. Is it possible for this object to have this charge? Justify your answer based on the properties of electric charge.
A neutral metal sphere is suspended by an insulating thread. A positively charged rod is brought close to, but does not touch, the sphere. The sphere is then briefly touched with your finger and the rod is removed. Explain the final charge on the sphere and the process involved.
A student claims that it is possible to have a fraction of the elementary charge (e.g., 0.5 × 1.6 × 10-19 C) on a macroscopic object. Is this claim correct? Explain your reasoning.
State and explain the principle of conservation of electric charge with an example involving the decay of a neutron into a proton, electron, and antineutrino.
Two identical metal spheres, A and B, are touching each other. Sphere A has a charge of +6 μC and sphere B has a charge of -2 μC. After separating the spheres, what will be the final charge on each sphere?
