Question

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Q1.A parallel plate capacitor is charged, such that electric field between the plates of capacitor is E. The energy density of the capacitor is​​​

Answer 1

Answer:

Given that,

Energy density =2.1×10

−9

J/m

3

We know that,

η=

2

1

ε

0

E

2

2.1×10

−9

=

2

1

×8.85×10

−12

×E

2

E

2

=

8.85×10

−12

4.2×10

−9

E

2

=0.47×10

3

E

2

=470

E=21.6N/C

Hence, the value of the electric field in the region between the plates is 21.6 N/C

Answer 2

Answer:

2-3 round to oval hypoechoic mass biggest measures 1.22cm seen in upper right side of neck by the side of submandibular salivary gland. likely to be enlarged lymph gland.

Nishu-