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NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
- Sensitivity of potentiometer can be increased by
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- S.I. unit of potential gradient is
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- Kirchhoff's first rule obeys law of conservation of charge. Explain.
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- The unit of specific resistance is
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- Four resistances of 16 Omega , 12 Omega , 4 Omega and 9 Omega respecti...
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- For measurement of potential difference, potentiometer is perferred in...
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- When a resistance of 100Omega is connected in series with a galvanomet...
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- The thermo emf E of a thermocouple is found to vary wit temperature T ...
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- The specific resistance and area of cross section of the potentiometer...
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- If the temperature of cold junction of thermocouple is lowered, then t...
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- For a thermocouple, the temperature of inversion is that temperature a...
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- If in the experiment of Wheatstone's bridge, the positions of cells an...
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- A wire of resistance 4 Omega is stretched to twice its original length...
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- The internal resistance of a 2.1 V cell which gives a current 0.2 A th...
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- The resistance of the four arms P, Q, R and S in a Wheatstone's bridg...
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- In a Wheatstone's bridge, three resistances P,Q and R connected in the...
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- An electron in potentiometer experiences a force 2.4xx10^(-19)N. The l...
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- The masses of the three wires of copper are in the ratio 5:3:1 and the...
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- The resistances in left and right gap of a meter brigdge are 20 omega ...
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- A potentiometer wire of length 10 m is connected in series with a bat...
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