Question 172: Magnetism and Matter

Question

Four identical long solenoids A, B, C and D are connected to each other as shown in the figure. If the magnetic field at the center of A is 3T, the field at the center of C would be : (Assume that the magnetic field is confined with in the volume of respective solenoid).

Accepted Answer

$$3{I_1} = {i}$$
$$ \Rightarrow $$ $${I_1} = {{{i}} \over 3}$$
$$B = {\mu _0}n{i} = 3T$$
$${B_C} = {\mu _0}n{I_1}$$
$$ \Rightarrow $$ $${B_C} = {\mu _0}n{{{i}} \over 3} = {{3T} \over 3} = 1T$$

Answer

12T

Answer

6T

Answer

9T

Answer

1T

Magnetism and Matter

Four identical long solenoids A, B, C and D are connected to each other as shown in the figure. If the magnetic field at the center of A is 3T, the field at the center of C would be : (Assume that the magnetic field is confined with in the volume of respective solenoid).

Choose the correct answer: