To decrease the range of an ammeter, its resistance need to be increased. An ammeter has resistance |
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a) |
|
b) |
|
c) |
|
d) |
None of these |
To decrease the range of an ammeter, its resistance need to be increased. An ammeter has resistance |
|||||||
a) |
|
b) |
|
c) |
|
d) |
None of these |
(d) A galvanometer can be converted into an ammeter by using a low resistance wire in parallel with the galvanometer. The range of ammeter can be increased but cannot be decreased. The reason is that a series resistor cannot change the current that will produce full deflection. A shunt connected in parallel is given by If |
If a current is allowed to pass through a circuit consisting of two dissimilar metals, there is either evolution or absorption of heat at the junction, depending upon the direction of the current. The effect is known as |
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a) |
Seebeck effect |
b) |
Joule effect |
c) |
Peltier effect |
d) |
Thomson effect |
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