Question 93: Atoms & Nuclei

Question

$$ 	ext { Match the following Columns. } $$

Column I
Column II

(A)
Dielectric ring uniformly charged.
(P)
Time independent electrostatic field out of system.

(B)
Dielectric ring uniformly charged rotating with angular velocity $\omega$.
(Q)
Magnetic field.

(C)
Constant current in ring io
(R)
Induced electric field.

(D)
$$i=i_o \cos \omega \mathrm{t}$$
(S)
Magnetic moment.

Accepted Answer

(A) Any static charge produces electric field $\forall$ invariant with time. Uniformly charged dielectric does the same.
(B) Rotating charged behaves like a current. hence, magnetic field is produced around the ring and also if there is current in rotating ring, ring has magnetic moment.
(C) Since, net charge is zero there will be no time independent electric field. The current produces magnetic field and magnetic moment.
(D) A changing magnetic field will be produced. This will create a induced electric field.
Also a changing magnetic moment will be produced.

Answer

$$ [\mathbf{A} \rightarrow(\mathbf{P}) ; \mathbf{B} \rightarrow(\mathbf{Q}, \mathbf{S}) ; \mathbf{C} \rightarrow (\mathrm{Q}) ; \mathrm{D} \rightarrow(\mathrm{Q})]$$

Answer

$$ [\mathbf{A} \rightarrow(\mathbf{P}) ; \mathbf{B} \rightarrow( \mathbf{S}) ; \mathbf{C} \rightarrow (\mathrm{Q}) ; \mathrm{D} \rightarrow(\mathrm{Q}, \mathrm{R})]$$

Answer

$$ [\mathbf{A} \rightarrow(\mathbf{P}) ; \mathbf{B} \rightarrow( \mathbf{S}) ; \mathbf{C} \rightarrow (\mathrm{Q}, \mathrm{~S}) ; \mathrm{D} \rightarrow(\mathrm{Q}, \mathrm{R})]$$

Answer

$$ [\mathbf{A} \rightarrow(\mathbf{P}) ; \mathbf{B} \rightarrow(\mathbf{Q}, \mathbf{S}) ; \mathbf{C} \rightarrow (\mathrm{Q}, \mathrm{~S}) ; \mathrm{D} \rightarrow(\mathrm{Q}, \mathrm{R}, \mathrm{~S})] $$

Atoms & Nuclei

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