Law of Electric Charges
Authored by Charles Martinez
Physics
12th Grade - Professional Development
NGSS covered
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18 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The law, governing the force between electric charges is known as
Ampere's law
Ohm's law
Coulomb's law
Faraday's law
Tags
NGSS.HS-PS2-4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The ratio of the forces between two small spheres with constant charge (a) in air (b) in a medium of dielectric constant K is
1 : K
K : 1
1 : K2
K 2: 1
Tags
NGSS.HS-PS2-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
+2C and -6C two charges are repelling each other with a force of 12N . If each charge is given -2C of charge, then the value of the force will be
4 N (Attractive)
4 N (Repulsive)
8 N (Repulsive)
zero
Tags
NGSS.HS-PS2-4
NGSS.HS-PS3-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
- 16 C
32 C
- 32 C
Tags
NGSS.HS-PS2-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is
F / 8
F / 4
4F
F/16
Tags
NGSS.HS-PS2-4
NGSS.HS-PS3-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Six charges, three positive and three negative of equal magnitude are to be placed at the vertices of a regular hexagon such that the electric force on a test charge at O is double the electric force when only one positive charge of same magnitude is placed at R. Which of the following arrangements of charges is possible for P, Q, R, S, T and U respectively
+ , - , +, - , - , +
+ , - , + , - , + , -
+ , + , - , + , - , -
-, + , + , - , + , -
Tags
NGSS.HS-PS2-4
NGSS.HS-PS3-5
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Tick the incorrect option.
Electrostatic force is a conservative in nature.
Two identical metallic spheres of exactly equal masses are taken. One is given a positive charge Q Coulombs and the other an equal negative charge. Their masses after charging are different.
The electric force between two charges changes, if we bring a third charge closer to them.
Electrostatic force is both attractive and repulsive.
Tags
NGSS.HS-PS2-4
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