Magnetic Effect of Current
Magnetic Effect of Current: Overview
This Topic covers sub-topics such as Magnetic Effect of Electric Current, Electromagnet, Solenoid, Magnetic Field Due to Current through a Circular Loop and, Magnetic Field Due to a Current-Carrying Conductor
Important Questions on Magnetic Effect of Current
Study the given diagram.
When a small magnetic needle is placed below a horizontal conductor carrying a strong current from west to east, its north pole will point in the direction of:
How to find poles of the magnetic field produced by a circular loop carrying current?
A circuit contains a battery, a variable resistor, and a solenoid. The figure below shows the magnetic field pattern produced by the current in the Solenoid.
a. State how the magnetic field pattern indicates regions where the magnetic field is stronger.
b. What happens to the magnetic field when the current in the circuit is reversed?
According to Right-hand thumb rule, the thumb indicates the direction of
Describe an experiment to show magnetic effect due to electric current.
A cylindrical current carrying coil is called a _____.
The end of the _____ which gets repelled by the bar magnet is the north pole while the one which gets attracted by the bar magnet is the south pole.
A uniform magnetic field exists in the plane of paper pointing from left to right as shown in figure. In the field an electron and proton move as shown. The electron and the proton experience
Two current-carrying solenoids exhibit:
Which device is used for converting electric energy into mechanical energy?
Four metal rods are placed, in turn, inside a coil of copper wire.
The table below gives the results of the experiment. Which rod would be the most suitable to use for the case of a coil in a circuit breaker?
| Meta rod | Number of paper clips picket up when there is current in the coil | Number of paper clips still attracted when the current is switched off |
| (a) | ||
| (b) | ||
| (c) | ||
| (d) |
Molecular tiny motor generates rotation by using _____ charge to spin the atom.
An electric motor converts electrical energy into mechanical energy.
Who among the following discovered that electricity and magnetism are related phenomena?
Let us take a straight conductor in which the electric current is directed towards the south as seen from the north. The magnetic field for such a current orientation is anti-clockwise.
In Maxwell's right hand thumb rule, the thumb points in the direction of-
