NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 20

MEDIUM

12th ICSE

IMPORTANT

Earn 100

What will be the intensity of an electric field in which an electron experiences an electric force equal to its weight? What in case of proton?

Important Questions on Electric Charges and Fields

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 21

Calculate the intensity of the electric field due to a helium nucleus at a distance of

1 \overset{\circ}{A}

from the nucleus.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 22

Two point charges

q_{1} = 400 μC

and

q_{2} = 100 μC

are kept fixed,

60 cm

apart in vacuum. Find intensity of the electric field at mid-point of the line joining

q_{1}

and

q_{2}

.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 23

Two point-charges

q_{1} = + 0.2 C

and

q_{2} = + 0.4 C

are

0.1

m apart. Find the electric field at

(i)

mid-point between the charges.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 23

Two point-charges

q_{1} = + 0.2 C

and

q_{2} = + 0.4 C

are

0.1

m apart. Find the electric field at a point on the line joining

q_{1}

and

q_{2}

such that it is

0.05 m

away from

q_{2}

and

0.15 m

away from

q_{1}

.

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 24

Electric charges

\pm 1000 μC

are placed at points $A$ and $B$ , respectively at a distance of

2 m

from each other. Calculate the electric fields at

(i)

mid-point of the line $AB$ .

HARD

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 24

Electric charges

\pm 1000 μC

are placed at points A and B, respectively at a distance of

2 m

from each other. Calculate the electric field at a point at equal distance of

4 m

from each charge.

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 25

A stationary oil drop between two parallel plates has a charge of

3.2 \times 10^{- 19} C

and a weight of

1.6 \times 10^{- 14} N

. Find the electric field acting on the drop.

MEDIUM

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 1 - Electric Charges and Fields>QUESTIONS>Q 26

Two charges, one

+ 5 μC

and other

- 5 μC

are placed

1 mm

apart. Calculate the dipole moment.