Current Electricity

Question: A potentiometer wire has length 10 m and resistance $20\,\Omega $. A 2. 5 V battery of negligible internal resistance is connected across the wire with an $80\,\Omega $ series resistance. The potential gradient on the wire will be

1) $5 \times {10^{ - 5}}\,V/mm$

2) $2.5 \times {10^{ - 4}}\,V/cm$

3) $0.62 \times {10^{ - 4}}\,V/mm$

4) $1 \times {10^{ - 5}}\,V/mm$

Solution:

Explanation: No Explanation

Different Measuring Instruments Potentiometer Meter Bridge

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