Science
Static Electricity
Grade 9 · Middle School
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- Question 1 of 20Easy
Two objects with like electric charges will ...
- Question 2 of 20Easy
Two objects with unlike electric charges will ...
- Question 3 of 20Easy
The SI unit of electric charge is ...
- Question 4 of 20Easy
The device used to detect the presence of electric charge is ...
- Question 5 of 20Easy
A plastic ruler rubbed against hair becomes electrically charged because ...
- Question 6 of 20Easy
The subatomic particle that carries a negative charge is ...
- Question 7 of 20Medium
Coulomb's law states that the electric force between two charges ...
- Question 8 of 20Medium
If the distance between two charges is doubled, the Coulomb force becomes ...
- Question 9 of 20Medium
If one charge is doubled while the other charge and the distance stay the same, the Coulomb force becomes ...
- Question 10 of 20Medium
A neutral object can become charged by bringing a charged object near it without touching. This process is called ...
- Question 11 of 20Medium
Which of the following is an electrical insulator?
- Question 12 of 20Medium
The region around an electric charge that is still affected by electric force is called ...
- Question 13 of 20Medium
The direction of electric field lines around a positive charge is ...
- Question 14 of 20Medium
Charging an object by rubbing it against another object is called charging by ...
- Question 15 of 20Hard
Two charges of 2 x 10^-6 C and 3 x 10^-6 C are 0.2 m apart. If k = 9 x 10^9 N m^2/C^2, the Coulomb force between them is ...
- Question 16 of 20Hard
The Coulomb force between two charges is F. If the distance is made three times larger, the force becomes ...
- Question 17 of 20Hard
An object carries a charge of 4.8 x 10^-19 C. If one electron carries 1.6 x 10^-19 C, the number of electrons added to the object is ...
- Question 18 of 20Hard
A test charge of 2 x 10^-6 C experiences an electric force of 4 x 10^-3 N. The electric field strength at that point is ...
- Question 19 of 20Hard
Look at these statements! (1) Like charges repel. (2) Coulomb's force is inversely proportional to distance. (3) Electric field lines point away from a positive charge. (4) Electrons are positively charged. The correct statements are numbers ...
- Question 20 of 20Hard
Two like charges Q1 = 4 C and Q2 = 9 C are separated by a distance r. The point with zero electric field strength is located at a distance of ... from Q1.