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Define Ampere from two current carrying parallel wires.

State the rule to determine the direction of a (i) magnetic field produced around a straight cocnductor - carrying current, (ii) force experienced by a current - carrying straight conductor placed in a magnetic field which is perpendicular to it , and (iii) current induced in a coil due to its rotation in a magnetic field .

Assertion: Electric field inside a current carrying wire is zero. Reason: Net charge on the current carrying wire is non zero.

Explain experiment which produced magnetic field due to straight long current carrying wire.

What is the direction of the magnetic force acting on a current - carrying wire placed in a magnetic field ?

Name the scientist who first suggested that a force would act on a current - carrying wire placed in a magnetic fiel .

In the following figure , magnetic field of different current - carrying wires is shown . Which figure represents the correct direction of the magnetic field ?

Show magnetic field lines for current carrying loop. Write rule for finding the direction of a magnetic field due to a circular current loop.

Derive an expression for the force per unit length between two infinitely long straight parallel current carrying wires. Hence, define one ampere (A).

Show magnetic field lines due to current carrying loop.