Consider a rectangular slab of length |
|||
a) |
Becomes half of the initial value |
b) |
Becomes one-fourth of the initial value |
c) |
Becomes double the initial value |
d) |
Remains same |
Consider a rectangular slab of length |
|||
a) |
Becomes half of the initial value |
b) |
Becomes one-fourth of the initial value |
c) |
Becomes double the initial value |
d) |
Remains same |
(c)
Resistance of the slab where
The potential across is
The length of the slab is doubled. Therefore the resistance is Assuming that the same current is passed, the potential across the new resistance is
Two cells having emf 4V, 2V and internal resistances 1 1
are connected as shown in figure below. Current through 6
resistance is
a) |
|
b) |
|
c) |
1A |
d) |
|
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