null points

As a result of two magnetic fields acting at the same place, the resultant field has a special feature. At a particular point, if the compass needle does not point in any particular direction, then there is no net magnetic field at the point. Such a point..

As a result of two magnetic fields acting at the same place, the resultant field has a special feature. At a particular point, if the compass needle does not point in any particular direction, then there is no net magnetic field at the point. Such a point is ..

Metre Bridge - This is the simplest form of wheatstone bridge and is specially useful for comparing resistances more accurately. The construction of the metre bridge is as shown in the below figure. It consists of one metre resistance wire clamped between two metallic strips bent at right angles an..

Consider the experiment of throwing a die. 2) Compound Event: If an event has more than one sample points, the event is called a compound event . In the above example, of throwing a die, {1, 4} is a compound event. 3) Null Event ( f ): As null set is a subset of..

. If the full-scale deflection of the galvanometer occurs for current I o and the ammeter is to have a range I m a x , we have The potentiometer is a device to compare potentials. Since the method involves a condition of no current flow, the device can be used to compare emfs of two sources. The Wh..

Module Four: Statistical Inference - Estimation (point estimators and confidence intervals): Estimating population parameters and margins of error Properties of point estimators, including unbiasedness and variability Logic of confidence intervals, meaning of confidence level an..