On what factors does the force experienced by a current-carrying conductor placed in a uniform magnetic field depend?

The flow of a current in a circular loop of a wire creates a magnetic field at its centre. How can the existence of this field be detected? State the rule which helps to predict the direction of this magnetic field.

In order to find the force experienced by a current-carrying conductor,we can use Maxwell's corkscrew rule.

$(a)$ Mention the colour code used for live,neutral,and earth wire.
$(b)$ You want to connect a $2 \ kW$ electric oven in the electric circuit. In which power line would you connect it and why? What may happen if you connect it wrongly in the other power line?

Can a freely suspended current-carrying solenoid stay in any direction? Justify your answer. What will happen when the direction of current in the solenoid is reversed? Explain.

To find the direction of the magnetic field around a current-carrying conductor,we use Fleming's left-hand rule.