|
What is the basic principle of electric pen ? Explain how it can be used for writing
|
|
0
|
4465
|
September 16, 2017
|
|
What is the difference between current flowing through metals and current flowing
|
|
0
|
3045
|
September 16, 2017
|
|
Give some uses of LED. How should LED be connected?
|
|
0
|
2859
|
September 16, 2017
|
|
Dinesh is wants to study the chemical effect of current at home. How can he do it?
|
|
0
|
1693
|
September 16, 2017
|
|
Which properties of chromium make it useful for electroplating on iron?
|
|
0
|
2612
|
September 16, 2017
|
|
Iron is a strong metal used for making bridges. Can we do electroplating
|
|
0
|
2274
|
September 16, 2017
|
|
What precautions should be observed when doing electroplating?
|
|
0
|
3268
|
September 16, 2017
|
|
What is the objective of electroplating?
|
|
0
|
3445
|
September 16, 2017
|
|
Give three applications of chemical effect of current
|
|
0
|
8338
|
September 16, 2017
|
|
During electrolysis of water, why does hydrogen collect on cathode
|
|
0
|
3240
|
September 16, 2017
|
|
Explain the process of electroplating of copper
|
|
0
|
8241
|
September 16, 2017
|
|
How can the magnetic effect be used as a tester?
|
|
0
|
2168
|
September 16, 2017
|
|
If the current in the circuit is small, how can we test its presence?
|
|
0
|
1184
|
September 16, 2017
|
|
The liquid is a conductor and the circuit is also complete, but the bulb does not glow
|
|
0
|
1726
|
September 16, 2017
|
|
The bulb in the tester does not glow when current is passed through
|
|
0
|
1285
|
September 16, 2017
|
|
How can you make a tester for testing whether a given material
|
|
0
|
1374
|
September 16, 2017
|
|
The bulb does not glow in the set-up shown in figure
|
|
0
|
1170
|
September 16, 2017
|