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What is the basic principle of electric pen ? Explain how it can be used for writing
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0
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4650
|
September 16, 2017
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|
What is the difference between current flowing through metals and current flowing
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0
|
3175
|
September 16, 2017
|
|
Give some uses of LED. How should LED be connected?
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0
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2969
|
September 16, 2017
|
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Dinesh is wants to study the chemical effect of current at home. How can he do it?
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0
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1768
|
September 16, 2017
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Which properties of chromium make it useful for electroplating on iron?
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0
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2709
|
September 16, 2017
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Iron is a strong metal used for making bridges. Can we do electroplating
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0
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2371
|
September 16, 2017
|
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What precautions should be observed when doing electroplating?
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0
|
3357
|
September 16, 2017
|
|
What is the objective of electroplating?
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0
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3548
|
September 16, 2017
|
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Give three applications of chemical effect of current
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0
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8398
|
September 16, 2017
|
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During electrolysis of water, why does hydrogen collect on cathode
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0
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3352
|
September 16, 2017
|
|
Explain the process of electroplating of copper
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0
|
9076
|
September 16, 2017
|
|
How can the magnetic effect be used as a tester?
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0
|
2243
|
September 16, 2017
|
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If the current in the circuit is small, how can we test its presence?
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0
|
1255
|
September 16, 2017
|
|
The liquid is a conductor and the circuit is also complete, but the bulb does not glow
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0
|
1790
|
September 16, 2017
|
|
The bulb in the tester does not glow when current is passed through
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0
|
1364
|
September 16, 2017
|
|
How can you make a tester for testing whether a given material
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0
|
1472
|
September 16, 2017
|
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The bulb does not glow in the set-up shown in figure
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0
|
1241
|
September 16, 2017
|