In 
solution when electric current equal to 2.5 faraday is passed, the gm equivalent deposited on the cathode is
|
(a) 1 |
(b) 1.5 |
(c) 2 |
(d) 2.5 |
(d) 2.5
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A resistance of 4
and a wire of length 5 metres and resistance 5 are joined in series and connected to a cell of e.m.f. 10 V and internal resistance 1. A parallel combination of two identical cells is balanced across 300 cm of the wire. The e.m.f. E of each cell is
|
(a) 1.5 V |
(b) 3.0 V |
(c) 0.67 V |
(d) 1.33 V |
The current in a triode at anode potential 100 V and grid potential – 1.2 V is 7.5 mA. If grid potential is changed to – 2.2 V, the current becomes 5.5 mA. the value of trans conductance (gm) will be
|
(a) 2 mili mho |
(b) 3 mili mho |
(c) 4 mili mho |
(d) 0.2 mili mho |
The magnetic field due to a straight conductor of uniform cross section of radius a and carrying a steady current is represented by
|
(a)
|
(b)
|
(c)
|
(d)
|
