Exp-1 To measure the magnetic flux density along the x-axis of the circular coils when the distance between them a = R (R = radius of the coils) and when it is greater and less than this.

Exp-2 To measure the spatial distribution of the magnetic flux density when the distance between coils a = R, using the rotational symmetry of the set-up.

**PHYSICS, Class XII, Part - 1, Chapter - 4, Moving Charges & magnetism.**

- Magnetic filed measure in boh the direction.
- Distance between coil is adjusted in U channel bench.
- Modular approach.
- Electrical safety tested for Power supply & Gaussmeter.

**Principle and Working:**

The magnetic field of the coil arrangement is rotationally symmetrical about the axis of the coils, which is chosen as the x-axis of a system of cylindrical coordinates (x, r, Φ). The origin is at the centre of the system. The magnetic flux density does not depend on the angle Φ, so only the components Bx (x, r) and Br (x, r) are measured.

In the present setup, a fairly uniform magnetic field is to use a pair of circular coils on a common axis with equal currents flowing in the same logic. For a given coil radius, you can calculate the separation needed to give the most uniform central field.

**Scope of Supply:**

Cat. No. |
Item Name |
Qty. |

SE079 | Power supply DC 0-16V, 5 Amp | 1 |

C4939 | Digital gauss meter with axial probe | 1 |

SV628 | Coil N=390, dia=150mm | 2 |

SH317 | Support base | 2 |

CD038 | Support rod | 2 |

CD036 | Base for helmholtz coil | 1 |

CD043 | U channel small | 1 |

CD042 | Deflection compass with Base | 1 |

CD039 | Axial probe holder | 1 |

SE067 | Digital multimeter | 1 |

SN201 | Lead 100cm black | 2 |

SN204 | Lead 100cm red | 1 |

SN203 | Lead 50cm red | 1 |

SN206 | Lead 50cm yellow | 1 |