Magnetic Field due to Current Carrying Conductor

Question 1: Explain the effect on the magnetic field produced at a point in a current-carrying circular coil due to an increase in the amount of current flowing through it.

Answer:

The magnetic field produced by current carrying circular coil is directly proportional to the current flowing through the coil. Therefore, with increase in the magnitude of magnetic field the current flowing through the coil will increase.

Question 2: How does a Solenoid behave like a Magnet?

Answer:

Since solenoid has iron core with insulated copper wire around it, therefore it behaves like magnet. When a current is flowing through the solenoid, magnetic field is produced around it. And the field produced is similar to the magnetic field of a bar magnet. 

Question 3: Define the right-hand thumb rule.

Answer:

This rule states that ‘If a current carrying conductor is held by right hand, keeping the thumb straight and if the direction of electric current is in the direction of thumb, then the direction of wrapping of other fingers will show the direction of magnetic field.’

Question 4: Why don’t two magnetic field lines cannot intersect each other?

Answer:

All Field lines follow their own path to reach from the North Pole to the South Pole. Two magnetic field lines do not intersect each other because if there was point of intersection, then there would be two tangents for a single point which means that the magnetic field has two directions, which is not possible.

Question 5: What is a Solenoid?

Answer: 

The solenoid is the coil with many circular turns of insulated copper wire wrapped closely in the shape of a cylinder. A current-carrying solenoid produces a similar pattern of the magnetic field as a bar magnet. One end of the solenoid behaves as the North Pole and another end behaves as the South Pole.

Magnetic field is considered a region where the force of magnetism is present. This magnetic force is generally created by a moving charge or magnetic substance. H. C. Oersted made the discovery that a current-carrying conductor creates a magnetic influence all around it in the early years of the 19th century. Although science and technology were not as advanced as they are now, it was already known from observations that the effect of lightning striking a ship may result in the compass needles malfunctioning, which would interfere with the navigation system. Let’s learn more about the magnetic field due to the current-carrying conductor in this article!