KCET 2025 | Moving Charges and Magnetism Question 1 | Physics

Two thin long parallel wires separated by a distance ' $r$ ' from each other in vacuum carry a current of I ampere in opposite directions. Then, they will

Attract each other with a force per unit length of $\frac{\mu_0 I^2}{2 \pi r}$

Repel each other with a force per unit length of $\frac{\mu_0 I^2}{2 \pi r}$

Repel each other with a force per unit length of $\frac{\mu_0 I^2}{2 \pi r^2}$

Attract each other with a force per unit length of $\frac{\mu_0 I^2}{2 \pi r^2}$

KCET 2025

MCQ (Single Correct Answer)

-0

A solenoid is 1 m long and 4 cm in diameter. It has five layers of windings of 1000 turns each and carries a current of 7A. The magnetic field at the centre of the solenoid is

$0.4396 \times 10^{-5} \mathrm{~T}$

$4.396 \times 10^{-2} \mathrm{~T}$

$43.96 \times 10^{-2} \mathrm{~T}$

439.6 T

KCET 2025

MCQ (Single Correct Answer)

-0

Identify the correct statement

A current carrying conductor produces an electric field around it.

A straight current carrying conductor has circular magnetic field lines around it.

The direction of magnetic field due to a current element is given by Flemings Left Hand Rule

The magnetic field inside a solenoid is non-uniform

KCET 2025

MCQ (Single Correct Answer)

-0

Which of the following graphs represents the variation of magnetic field $B$ with perpendicular distance ' $r$ ' from an infinitely long, straight conductor carrying current?

KCET 2025 Physics - Moving Charges and Magnetism Question 1 English Option 1

KCET 2025 Physics - Moving Charges and Magnetism Question 1 English Option 2

KCET 2025 Physics - Moving Charges and Magnetism Question 1 English Option 3

KCET 2025 Physics - Moving Charges and Magnetism Question 1 English Option 4

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