pre-test april 16

It is a region around a magnetic material or a moving charged particle in which magnetic forces can be detected.

• Vector

• Magnetic Field

• Transformer

A current-carrying rectangular coil placed in a uniform magnetic field. In which orientation will the coil rotate?

• In any orientation

• The magnetic field is parallel to the plane of the coil

• The magnetic field is at 45⁰ with the plane of the coil

• The magnetic field is perpendicular to the plane

The reason the coil is bound over the metallic frame in moving coil galvanometer is

• The metallic frame helps in oscillation

• The metallic frame helps in making steady deflection without any oscillation

• The metallic frame increases the magnetic field

In a Circuit, Ammeter should be always connected in ____ arrangement

• Series

• Parallel

• Either in Series or in Parallel

• Can be connected in booth

In a _____ circuit, if one light bulb goes out, all light bulbs will go out.

• parallel

• series

• partial

• closed

The Gauss divergence theorem converts

• a) line to surface integral

• b) line to volume integral

• c) surface to line integral

• d) surface to volume integral

1) A wire carries a current, creating a magnetic field around itself as shown. The current in the wire is:

• A. Directed to the right

• A. Directed to the left

• A. Equal to the magnetic field

• In the same direction as the magnetic field

The Cartesian coordinates can be related to cylindrical coordinates and spherical coordinates. State True/False.

• True

• False

Potential difference is the work done in moving a unit positive charge from one point to another in an electric field. State True/False.

• True

• False

Maximum power is transferred from the source to the load end when the _____ of the circuit matches with the load impedance

• Impedance

• capacitance

• admittance

• power