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Worksheetselectricity
Total questions: 10
Worksheet time: 5mins
Two wires of same length and area, made of two materials of resistivity ρ1 and ρ2 are connected in parallel V to a source of potential. The equivalent resistivity for the same length and area is-
The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is
< 100 Ω
< 4 Ω
< 1 Ω
> 2 Ω
Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is-
current
voltage
resistance
None of these
Two wires of same length and area made of two materials of resistivity ρ1 and ρ2 are connected in series to a source of potential V. The equivalent resistivity for the same area is-
To get 2 Ω resistance using only 6 Ω resistors, the number of them required is-
2
3
4
6
What will be The resistance whose V-I graph is given above..
A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is-
2 A
4 A
8 A
16 A
A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is-
2 × 103 joule
2 × 105joule
2 × 104 joule
2 × 102 joule
The temperature of a conductor is increased. The graph best showing the variation of its resistance is-
A wire of length /, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to-
ρ
ρ2
2 ρ
4 ρ
