- AHigh resistance in series with galvanometer.
- BLow resistance in series with galvanometer.
- CHigh resistance in parallel with galvanometer.
- DLow resistance in parallel with galvanometer.
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The expression for the capacity of the capacitor formed by compound dielectric placed between the plates of a parallel plate capacitor as shown in figure, will be (area of plate = A)
|
(a) |
(b) |
(c) |
(d) |
Zener breakdown takes place if
|
(a) Doped impurity is low |
(b) Doped impurity is high |
|
(c) Less impurity in N-part |
(d) Less impurity in P-type |

A logic gate is an electronic circuit which
|
(a) Makes logic decisions |
|
(b) Allows electrons flow only in one direction |
|
(c) Works binary algebra |
|
(d) Alternates between 0 and 1 values |
Equal potentials are applied on an iron and copper wire of same length. In order to have the same current flow in the two wires, the ratio r (iron)/r (copper) of their radii must be (Given that specific resistance of iron = ohm–m and specific resistance of copper = 1.7
ohm-m)
|
(a) About 1.2 |
(b) About 2.4 |
(c) About 3.6 |
(d) About 4.8 |