If a straight conductor is held normal to this page and current is flowing into the page, what is the direction of the electromagnetic field produced ?

Cross section of three wires is shown in the following figure. If the current in the bottom two wires is opposite in direction to each other as indicated by plus for into the page and O for out of the page, and the top wire has current flowing into the page plus what is the direction of net force on the top wire ?

Two straight long parallel conductors are moved towards each other. A constant current i is flowing through one of them. What is the direction of the current induced in other conductor ? What is the direction of induced current when the conductors are drawn apart.

A current-carrying straight wire is held in exactly vertical position. If the current passes through this wire in the vertically upward direction, what is the direction of magnetic field produced by it ? Name the rule used to find out the direction of magnetic field.

If a current flowing in a circular coil is in anticlockwise direction , then direction of magnetic field will be

Find the magnetic field induction (in magnitude and direction) at a point due to current flowing in a long straight conductor. Show the sketch of magnetic field produced.

Figure given in the question is a cross-sectional view of a coaxial cable. The centre conductor is surrounded by a rubber layer, which is surrounded by an outer conductor, which is surrounded by another rubber layer. The current in the inner conductor is 1.0 A out of the page, and the current in the outer conductor is 3.0A into the page. Determine the magnitude and direction of the magnetic field at points a and b.