What precautions have you taken to perform Carey Foster experiment?

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What precautions have you taken to perform Carey Foster experiment?

Precautions: 1) All the connections are to be made tightly. 2) Allow the current to flow through the circuit on when the readings are to be taken. 3) Jockey should not be dragged on the wire, it should be lifted and made in contact with the wire.

What type of precautions are needed for pertussis?

Illnesses that require droplet precautions include influenza (flu), pertussis (whooping cough), mumps, and respiratory illnesses, such as those caused by coronavirus infections. Anyone who goes into the room should wear a surgical mask.

What is the working principle of Carey Foster bridge?

The Carey foster bridge principle is simple and similar to Wheatstone’s bridge working principle. It works on the principle of null detection. That means the ratios of the resistances will be equal and the galvanometer records zero where there is no current flow.

Why Carey Foster bridge is so sensitive?

The Carey Foster bridge is so sensitive because it is used for measuring the smallest decimal change in the resistance. The sensitivity of Carey Foster bridge is proportional to the length of the wire used in the bridge. Stay tuned with BYJU’S to learn more about other concepts such as the working of Wheatstone bridge.

Why are two equal resistances P and Q kept constant in Carey Foster’s bridge experiment?

P and Q are two ratio arms, X along with the resistance of wired aD and Y along with resistance of wire bD form other two arms. Thus, the difference between the two resistances is equal to resistance of the bridge wire between the two balance points.

What is the effect of increasing the effective length of Carey Foster bridge wire?

What is the effect of increasing the effective length of a Carey Foster’s bridge wire? Ans. It will increase the accuracy of the result because then percentage error in reading the position of the balance point is very much decreased.

What type of PPE is used for pertussis?

Droplet precautions are used when you have disease in your lungs or throat, such as: The flu. Pertussis (whooping cough)

Which wire is used in Carey Foster bridge?

The Carey Foster’s bridge is as in the figure1. One meter long wire of manganin or constantan of uniform cross-section area is stretched along a meter scale.

Why Carey Foster is better than meter bridge?

Carey Foster Bridge Advantages The Carey Foster bridge is a modified form of the meter bridge in which the effective length of the wire is considerably increased by connecting a resistance in series with each end of the wire. This increases the accuracy of the bridge.

Why the two equal resistances P and Q are kept constant in Carey Foster’s bridge experiment?