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12th Odisha Board
IMPORTANT
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A silver wire has a resistance of 2 Ω at 100∘ C. If the temperature coefficient of resistance of silver is 0.00375 per degree C. It's resistance at 200∘ C will be nearly:

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Important Questions on Electric Current

EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 16
Two cylindrical wires are made of the same material and have their lengths in the ratio 2:1 and diameters in the ratio 1:2. The ratio of the resistance of the thinner wire to that of thicker wire is:
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 17
The temperature coefficient of resistance is nearly zero for 
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 18
Which of the following equation is wrong?(symbols have their usual meaning)
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 19
The dimension of electrical potential difference is 
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 20
The Critical temperature of the material is that temperature, below which the conductor behaves as 
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 1
Define one ampere and one ohm.
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 2
Name another physical quantity like current that is a scaler having sense represented by an arrow in the diagram.
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 3
Mention the dimension of the electric current.