A long solenoid has 200 turns per cm and carries a current i. The magnetic field at its center is 6.28 × 10⁻² Weber/m². Another long solenoid has 100 turns per cm and it carries a current i/3. The value of the magnetic field at its center is

Magnetic Effects of Current and Magnetism: JEE Main 2006 Physics question

JEE Main 2006 · Annual, Paper 1 · Q7669

JEE Main 2006Annual, Paper 1PhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

A long solenoid has

200

turns per

cm

and carries a current

i.

The magnetic field at its center is

6.28 \times {10^{ - 2}}\,\,\,Weber/{m^2}.

Another long solenoid has

100

turns per

cm

and it carries a current

{i \over 3}

. The value of the magnetic field at its center is

JEE Main 2006 · Annual, Paper 1 · Q7669

JEE Main 2006Annual, Paper 1PhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

A long solenoid has

200

turns per

cm

and carries a current

i.

The magnetic field at its center is

6.28 \times {10^{ - 2}}\,\,\,Weber/{m^2}.

Another long solenoid has

100

turns per

cm

and it carries a current

{i \over 3}

. The value of the magnetic field at its center is