|
What is the basic principle of electric pen ? Explain how it can be used for writing
|
|
0
|
4181
|
September 16, 2017
|
|
What is the difference between current flowing through metals and current flowing
|
|
0
|
2914
|
September 16, 2017
|
|
Give some uses of LED. How should LED be connected?
|
|
0
|
2733
|
September 16, 2017
|
|
Dinesh is wants to study the chemical effect of current at home. How can he do it?
|
|
0
|
1592
|
September 16, 2017
|
|
Which properties of chromium make it useful for electroplating on iron?
|
|
0
|
2491
|
September 16, 2017
|
|
Iron is a strong metal used for making bridges. Can we do electroplating
|
|
0
|
2169
|
September 16, 2017
|
|
What precautions should be observed when doing electroplating?
|
|
0
|
3173
|
September 16, 2017
|
|
What is the objective of electroplating?
|
|
0
|
3345
|
September 16, 2017
|
|
Give three applications of chemical effect of current
|
|
0
|
8294
|
September 16, 2017
|
|
During electrolysis of water, why does hydrogen collect on cathode
|
|
0
|
3166
|
September 16, 2017
|
|
Explain the process of electroplating of copper
|
|
0
|
7174
|
September 16, 2017
|
|
How can the magnetic effect be used as a tester?
|
|
0
|
2051
|
September 16, 2017
|
|
If the current in the circuit is small, how can we test its presence?
|
|
0
|
1112
|
September 16, 2017
|
|
The liquid is a conductor and the circuit is also complete, but the bulb does not glow
|
|
0
|
1669
|
September 16, 2017
|
|
The bulb in the tester does not glow when current is passed through
|
|
0
|
1232
|
September 16, 2017
|
|
How can you make a tester for testing whether a given material
|
|
0
|
1303
|
September 16, 2017
|
|
The bulb does not glow in the set-up shown in figure
|
|
0
|
1122
|
September 16, 2017
|