Current Electricity Test

Result

Current Electricity Test - 41

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Weekly Quiz Competition

Question 1
4 / -1

The following four wires are made of the same material and are at the same temperature. Which one of them has highest electrical resistance?

A
Length = 50 cm, diameter = 0.5 mm

B
Length = 100 cm, diameter = 1 mm

C
Length = 200 cm, diameter = 2 mm

D
Length = 300 cm, diameter = 3 mm

Solution
Question 2
4 / -1

Find the true statement

A
Ohm's law is applicable to all conductors of electricity

B
In an electrolyte solution, the electric current is mainly due to the movement of electrons

C
The resistance of an incandescent lamp is lesser when the lamp is switched on

D
The resistance of carbon decreases with the increase of temperature
Question 3
4 / -1

The tolerance level of a resistor with the colour codered, blue, orange, gold is

A
± 5%

B
± 10%

C
± 20%

D
± 40%
Question 4
4 / -1

If a wire is stretched to make it 0.1% longer, itsresistance will

A
Increase by 0.05%

B
Increase by 0.2%

C
Decrease by 0.2%

D
Decrease by 0.05%

Solution
Question 5
4 / -1

In a conductor if 3000 coulomb of charge enters and 3000 coulomb of charge exits in time 10 minutes, thenthe current is

A
5 ampere

B
10 ampere

C
2.5 ampere

D
Zero

Solution
Question 6
4 / -1

The potential difference between points A and B ofadjoining figure is

A

B

C

D
2V

Solution
Question 7
4 / -1

A wire of resistance R is divided in 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will be

A
0.01 R

B
0.1 R

C
10 R

D
100 R

Solution
Question 8
4 / -1

There are 8 equal resistances R. Two are connected in parallel, such four groups are connected in series, the total resistance of the system will be

A
R/2

B
2R

C
4 R

D
8 R

Solution
Question 9
4 / -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

Solution
Question 10
4 / -1

The reading of the ammeter as per figure shown is

A

B

C

D

Solution