Current Electricity Test

Result

Current Electricity Test - 53

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Weekly Quiz Competition

Question 1
4 / -1

Two cells having the internal resistance 0.2 Ω. and 0.4 Ω are connected in parallel. The voltage across thebattery terminal is 1.5 Volt. The e.m.f. of first cell is 1.2 Volt. The e.m.f. of the second cell is

A
2.7 Volt

B
2.1 Volt

C
3 Volt

D
4.2 Volt

Solution
Question 2
4 / -1

A current of 6 A enters one corner P of an equilateral triangle PQR having 3 wires of resistances 2 Ω each and leaves by the corner R. Then, the current I₁ and I₂ are

A
2 A, 4 A

B
4 A, 2 A

C
1 A, 2 A

D
2 A, 3 A

Solution
Question 3
4 / -1

A current of two ampere is flowing through a cell of e.m.f. 5 volt and internal resistance 0.5 ohm from negative to positive electrode. If the potential of negative electrode is 10 V, the potential of positive electrode will be

A
5 V

B
14 V

C
15 V

D
16 V

Solution
Question 4
4 / -1

100 cells each of e.m.f. 5 V and internal resistance 1 ohm are to be arranged so as to produce maximum current in a 25 ohm resistance. Each row is to contain equal number of cells. The number of rows should be

A
2

B
4

C
5

D
10

Solution
Question 5
4 / -1

If six identical cells each having an e.m.f. of 6V are connected in parallel, the e.m.f. of the combination is

A
1 V

B
36 V

C

D
6 V

Solution
Question 6
4 / -1

Consider the circuit shown in the figure. The current I₃is equal to

A
5 amp

B
3 amp

C
–3 amp

D
–5/6 amp

Solution
Question 7
4 / -1

If V_AB = 4V in the given figure, then resistance X will be

A
5Ω

B
10Ω

C
15Ω

D
20Ω

Solution
Question 8
4 / -1

Two resistances R₁ and R₂are joined as shown in the figure to two batteries of e.m.f. E₁ and E₂. If E₂is short-circuited, the current through R₁ is

A
E₁ /R₁

B
E₂/R₁

C
E₂/R₂

D
E₁ / (R₂ + R₁)

Solution
Question 9
4 / -1

A storage battery has e.m.f. 15 volt and internal resistance 0.05 ohm. Its terminal voltage when it is delivering 10 ampere is

A
30 volt

B
1.00 volt

C
14.5 volt

D
15.5 volt

Solution
Question 10
4 / -1

The number of dry cells, each of e.m.f. 1.5 volt and internal resistance 0.5 ohm that must be joined in series with a resistance of 20 ohm so as to send a current of 0.6 ampere through the circuit is

A
2

B
8

C
10

D
12

Solution