A. voltmeter
B. rheostat
C. wattmeter
D. galvanometer
0
In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is
0
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is___________?
A. 33 V
B. 66 v
C. 80 V
D. 132 V
1
The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?
A. 400 Q
B. 600 Q
C. 800 Q
D. 1000 Q
0
Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 25 Q. If the same four wires are connected is series the effective resistance will be________?
A. 18 Q
B. 36 Q
C. 48 Q
D. 64 Q
8
A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is_____________?
A. 100 Ω
B. 200 Ω
C. 300 Ω
D. 400 Ω
0
Current velocity through a copper conductor is___________?
A. 6.4 A, 6.9 A
B. 6.4 A, 9.6 A
C. 4.6 A, 6.9 A
D. 4.6 A, 9.6 A
0
Which of the following material has nearly zero temperature co-efficient of resistance_________?
A. the same as propagation velocity of electric energy
B. independent of current strength
C. of the order of a few ^.s/m
D. nearly 3 x 108 m/s
0
You have to replace 1500 Q resistor in radio. You have no 1500 Q resistor but have several 1000 Q ones which you would connect__________?
A. Manganin
B. Porcelain
C. Carbon
D. Copper
0
Two resistors are said to be connected in series when___________?
A. two in parallel
B. two in parallel and one in series
C. three in parallel
D. three in series
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