1. The lowest resistance which can be obtained by
connecting 10 resistors each of 1/10 ohm is
a) 1/250 Ω
b) 1/200 Ω
c) 1/100 Ω
d) 1/10 Ω
Explanation:
2.The reading of the ammeter as per figure shown
is
a) \[\frac{1}{8}A\]
b) \[\frac{3}{4}A\]
c) \[\frac{1}{2}A\]
d) 2 A
Explanation:
3.Three resistors each of 2 ohm are connected
together in a triangular shape. The resistance
between any two vertices will be
a) 4/3 ohm
b) 3/4 ohm
c) 3 ohm
d) 6 ohm
Explanation:
4. There are n similar conductors each of resistance
R . The resultant resistance comes out to be x
when connected in parallel. If they are connected
in series, the resistance comes out to be
a) \[x/n^{2}\]
b) \[n^{2}x\]
c) x/n
d) nx
Explanation:
5. Equivalent resistance between A and B will be
a) 2 ohm
b) 18 ohm
c) 6 ohm
d) 3.6 ohm
Explanation:
6.A wire has a resistance of 12 ohm. It is bent in the
form of equilateral triangle. The effective
resistance between any two corners of the
triangle is
a) 9 ohms
b) 12 ohms
c) 6 ohms
d) 8/3 ohms
Explanation:
7. Three resistances of magnitude 2, 3 and 5 ohm are
connected in parallel to a battery of 10 volts and
of negligible resistance. The potential difference
across 3 Ω resistance will be
a) 2 volts
b) 3 volts
c) 5 volts
d) 10 volts
Explanation: Potential difference across all resistors in parallel combination is same.
8. A current of 2 A flows in a system of conductors
as shown. The potential difference ( VA - VB) will
be
a) + 2 V
b) + 1 V
c) - 1 V
d) - 2 V
Explanation:
9. Two resistances are joined in parallel whose
resultant is \[\frac{6}{8}ohm\] . One of the resistance wire is
broken and the effective resistance becomes 2 Ω.
Then the resistance in ohm of the wire that got
broken was
a) 3/5
b) 2
c) 6/5
d) 3
Explanation:
10. Given three equal resistors, how many different
combination of all the three resistors can be made
a) Six
b) Five
c) Four
d) Three
Explanation:
