1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

A $$2 \mathrm{~g}$$ object, located in a region of uniform electric field $$\mathrm{E}=\left(300 \mathrm{NC}^{-1}\right) \hat{\mathbf{i}}$$ carries a charge $$Q$$. The object released from rest at $$x=0$$, has a kinetic energy of $$0.12 \mathrm{~J}$$ at $$x=0.5 \mathrm{~m}$$. Then, $$Q$$ is

A
$$400 \mu \mathrm{C}$$
B
$$-400 \mu \mathrm{C}$$
C
$$800 \mu \mathrm{C}$$
D
$$-800 \mu \mathrm{C}$$
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is false in the case of polar molecules?

A
Centres of positive and negative charges are separated in the absence of external electric field.
B
Centres of positive and negative charges are separated in the presence of external electric field.
C
Do not possess permanent dipole moments.
D
Ionic molecule $$\mathrm{HCl}$$ is the example of polar molecule.
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

A point charge $$q$$ is placed at the corner of a cube of side $$a$$ as shown in the figure. What is the electric flux through the face $$A B C D$$ ?

KCET 2020 Physics - Electrostatics Question 31 English

A
0
B
$$\frac{q}{24 \varepsilon_0}$$
C
$$\frac{q}{6 \varepsilon_0}$$
D
$$\frac{q}{72 \varepsilon_0}$$
4
KCET 2020
MCQ (Single Correct Answer)
+1
-0

The electric field lines on the left have twice the separation on those on the right as shown in figure. If the magnitude of the field at $$A$$ is $$40 \mathrm{~Vm}^{-1}$$, what is the force on $$20 \mu \mathrm{C}$$ charge kept at $$B$$ ?

KCET 2020 Physics - Electrostatics Question 29 English

A
$$4 \times 10^{-4} \mathrm{~N}$$
B
$$8 \times 10^{-4} \mathrm{~N}$$
C
$$16 \times 10^{-4} \mathrm{~N}$$
D
$$1 \times 10^{-4} \mathrm{~N}$$
KCET Subjects
EXAM MAP