Current Electricity Test

Result

Current Electricity Test - 13

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Weekly Quiz Competition

Question 1
4 / -1

Each resistance shown in figure is 251. The equivalent resistance between A and B is

A
2 Ω

B
4 Ω

C
8 Ω

D
1 Ω

Solution
Question 2
4 / -1

A uniform wire of resistance R and length L is cut into four equal parts, each of length LI 4, which are then connected in parallel combination. The effective resistance of the combination will be

A
R

B
4R

C

D

Solution
Question 3
4 / -1

Six equal resistances are connected between points P, Q and R as shown in the figure. Then, the net resistance will be maximum between

A
P and Q

B
Q and R

C
P and R

D
only two points

Solution
Question 4
4 / -1

In the circuit given E = 6.0 V, R₁ = 100Ω, R₂ = R₃ = 50 Ω, R₄ = 75 Ω. The equivalent resistance of the circuit, in ohm, is

A
11.875

B
26.31

C
118.75

D
None of the above

Solution
Question 5
4 / -1

By using only two resistance coils singly, in series or in parallel one should be able to obtain resistances of 3, 4, 12 and 16 ohm. The separate resistances of the coil are

A
3 and 4

B
4 and 12

C
12 and 16

D
16 and 3

Solution
Question 6
4 / -1

The current in the 1 Ω resistor shown in the circuit is

A

B
3 A

C
6 A

D
2 A

Solution
Question 7
4 / -1

What will be the value of current i in the circuit shown?

A
0.67 A

B
1 A

C
0.32 A

D
None of these

Solution
Question 8
4 / -1

A battery is charged at a potential of 15 V in 8 h, when the current flowing is 10 A. The battery on discharge supplies a current of 5A for 15 h. The mean terminal voltage during discharge is 14V. The watt hour efficiency of battery is

A
80%

B
90%

C
87.5%

D
82.5%

Solution
Question 9
4 / -1

The potential difference across the terminals of a battery is 50 V when 11 A current is drawn and 60 V, when 1 A current is drawn. The einf and the internal resistance of the battery are

A
62 V, 2Ω

B
63 V, 1Ω

C
61 V, 1Ω

D
64 V, 2Ω
Question 10
4 / -1

Two resistors of resistance 2Ω and 6Ω are connected is parallel. This combination is then connected to a battery of emf 2V and internal resistance 0.5Ω . What is the current flowing through the battery?

A
4 A

B
4/3 A

C
4/17 A

D
1 A

Solution