Last Updated On [03-11-2023]
A wire has a resistance of 6
. It is cut into two parts and both half values are connected in parallel. The new resistance is
a)
3
b)
6
c)
12
d)
1.5
A wire has a resistance of 6 . It is cut into two parts and both half values are connected in parallel. The new resistance is
a)
3
b)
6
c)
12
d)
1.5
Question ID - 151362 :-
A wire has a resistance of 6 . It is cut into two parts and both half values are connected in parallel. The new resistance is
a)
3
b)
6
c)
12
d)
1.5
|
A wire has a resistance of 6 |
|||||||
|
a) |
3 |
b) |
6 |
c) |
12 |
d) |
1.5 |
|
(d) Resistance of original wire is
Thus, the net resistance of parallel combination of two halves is given by
|
,being the specific resistance of wire. When the wire is cut in two equal halves then resistance becomes
Next Question :
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A source of emf E=15V and having negligible internal resistance, is connected to a variable resistance, so that the current in the circuit increases with time as I=1.2t+3. Then, the total charge that will flow in first 5s will be |
|||||||
|
a) |
10C |
b) |
20C |
c) |
30C |
d) |
40C |
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