A spherical conductor of radius 10 cm has a charge of distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere? [2020]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

Q.
A spherical conductor of radius 10 cm has a charge of $3.2 \times 10^{- 7} C$ distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere $(\frac{1}{4 π ε_{0}} = 9 \times 10^{9} {Nm}^{2} / C^{2})$ [2020]

1 $1.28 \times 10^{4} N/C$

2 $1.28 \times 10^{5} N/C$

3 $1.28 \times 10^{6} N/C$

4 $1.28 \times 10^{7} N/C$

Ans.
(2)

Here, $r =$ 10 cm, $q = 3.2 \times 10^{- 7} C$

$E = \frac{k q}{r^{2}} = \frac{9 \times 10^{9} \times 3.2 \times 10^{- 7}}{225 \times 10^{- 4}}$

$E = 1.28 \times 10^{5} N/C$

Solution

Q.
A spherical conductor of radius 10 cm has a charge of $3.2 \times 10^{- 7} C$ distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere $(\frac{1}{4 π ε_{0}} = 9 \times 10^{9} {Nm}^{2} / C^{2})$ [2020]

1 $1.28 \times 10^{4} N/C$

2 $1.28 \times 10^{5} N/C$

3 $1.28 \times 10^{6} N/C$

4 $1.28 \times 10^{7} N/C$

Ans.
(2)

Here, $r =$ 10 cm, $q = 3.2 \times 10^{- 7} C$

$E = \frac{k q}{r^{2}} = \frac{9 \times 10^{9} \times 3.2 \times 10^{- 7}}{225 \times 10^{- 4}}$

$E = 1.28 \times 10^{5} N/C$

Want Us to Email you About Special Offers & Updates?

Solution

Q. A spherical conductor of radius 10 cm has a charge of 3.2×10-7C distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere (14πε0=9×109Nm2/C2) [2020]

1 1.28×104N/C

2 1.28×105N/C

3 1.28×106N/C

4 1.28×107N/C

Ans. (2) Here, r=10 cm, q=3.2×10-7C E=kqr2=9×109×3.2×10-7225×10-4 E=1.28×105N/C

Want Us to Email you About Special Offers & Updates?

Q.
A spherical conductor of radius 10 cm has a charge of $3.2 \times 10^{- 7} C$ distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere $(\frac{1}{4 π ε_{0}} = 9 \times 10^{9} {Nm}^{2} / C^{2})$ [2020]

1 $1.28 \times 10^{4} N/C$

2 $1.28 \times 10^{5} N/C$

3 $1.28 \times 10^{6} N/C$

4 $1.28 \times 10^{7} N/C$

Ans.
(2)

Here, $r =$ 10 cm, $q = 3.2 \times 10^{- 7} C$

$E = \frac{k q}{r^{2}} = \frac{9 \times 10^{9} \times 3.2 \times 10^{- 7}}{225 \times 10^{- 4}}$

$E = 1.28 \times 10^{5} N/C$