When no current is passed through a conductor,

Which of the following options is not the formula for heat energy (in joule) produced when a current is passed through a conductor?

When current is passed through the conductor, the compass needle deflects. Why?

When no current passes through a conductor,choose which one of the following is incorrect?

When current is passed through a conductor a magnetic field is produced. The direction of the magnetic field can be found out using the right hand thumb rule. State this rule.

When current is passed through a conductor a magnetic field is produced. The direction of the magnetic field can be found out using the right hand thumb rule. Name and state another rule used for this purpose.

Whenever changing current is passed through a conductor, an e.m.f. is induced, that is.

When current passes through a conductor,

Factors influencing the heat developed when a current passes through a conductor.