b) Why a metre bridge cannot be used to measure very small resistancec

1.	b) Why a metre bridge cannot be used to measure very small resistancec) Why is it generally preferred to obtain the balance point nearthe middle of the bridge wire in meter bridge
Answer» metre bridge is not suitable for both very high/low resistances..and the reason is as follows… If we measure too high resistance and the meter deflection is too small, ie, currents are too low. Similarly For Too low and you get errors due to the resistance of the wire and the connections.

b) Why a metre bridge cannot be used to measure very small resistancec) Why is it generally preferred to obtain the balance point nearthe middle of the bridge wire in meter bridge

Answer»

metre bridge is not suitable for both very high/low resistances..and the reason is as follows…

If we measure too high resistance and the meter deflection is too small, ie, currents are too low.

Similarly

For Too low and you get errors due to the resistance of the wire and the connections.

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b) Why a metre bridge cannot be used to measure very small resistancec) Why is it generally preferred to obtain the balance point nearthe middle of the bridge wire in meter bridge

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