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128
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat...
By Satkriti Roao, 4 years ago
replies 1
0
1
344
If the charge on an electron is 1.6 x 10^-19 coulombs, how many electrons should pass thro...
By Satkriti Roao, 4 years ago
replies 1
0
1
147
What is a circuit diagram? Draw the labelled diagram of an electric circuit comprising of ...
By Satkriti Roao, 4 years ago
replies 1
0
1
181
Draw circuit symbols for (a) fixed resistance (b) variable resistance (c) a cell (d) a bat...
By Satkriti Roao, 4 years ago
replies 1
0
1
84
Why should the resistance of : (a) an ammeter be very small? (b) a voltmeter be very large...
By Satkriti Roao, 4 years ago
replies 1
0
1
85
Write down the formula which relates electric charge, time and electric current. (b) A rad...
By Satkriti Roao, 4 years ago
replies 1
0
1
133
What is an ammeter? How is it connected in a circuit? Draw a diagram to illustrate your an...
By Satkriti Roao, 4 years ago
replies 1
0
1
89
(a) What is an electric current? What makes an electric current flow in a wire? (b) Define...
By Satkriti Roao, 4 years ago
replies 1
0
1
70
Name a device which helps to maintain potential difference across a conductor (say, a bulb...
By Satkriti Roao, 4 years ago
replies 1
0
1
91
A current is a flow of……….. For this to happen there must be a
By Satkriti Roao, 4 years ago
replies 1
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