Free Printable class10 Electricity

1.

A wire of length l, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to,

a)

$\rho$

b)

$\frac{\rho}{2}$

c)

$2\rho$

d)

$4\rho$

2.

A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is:

a)

$2\times10^{5\ }J$

b)

$2\times10^{3\ }J$

c)

$2\times10^{2\ }J$

d)

$2\times10^{4\ }J$

3.

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:

a)

2 A

b)

8 A

c)

4 A

d)

16 A

4.

To get 2 Ω resistance using only 6 Ω resistors, the number of them required is:

a)

6

b)

4

c)

2

d)

3

5.

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:

a)

CURRENT

b)

RESISTANCE

c)

VOLTAGE

d)

NONE OF THESE

6.

Calculate the current flows through the 10 Ω resistor in the following circuit.

a)

1.2 A

b)

0.2 A

c)

2 A

d)

0.6 A

7.

Two resistors are connected in series gives an equivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Then the individual resistance are:

a)

$each\ of\ 5\Omega$

b)

$7\Omega\ and\ 4\Omega$

c)

$6\Omega\ and\ 4\Omega$

d)

$8\Omega\ and\ 2\Omega$

8.

If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then

a)

$R_1<R_2$

b)

$R_2<R_1$

c)

$R_1=R_2$

d)

$R_1\ge R_2$

9.

A coil in the heater consume power P on passing current. If it is cut into halves and joined in parallel, it will consume power:

a)

$P$

b)

$\frac{P}{2}$

c)

$4P$

d)

$2P$

10.

The effective resistance between A and B is:

a)

$4\Omega$

b)

$10\Omega$

c)

$6\Omega$

d)

None of these

11.

A cell, a resistor, a key, and an ammeter are arranged as shown in the circuit diagrams. The current recorded in the ammeter will be :

a)

Maximum in (i)

b)

Maximum in (ii)

c)

Maximum in (iii)

d)

Same in all three

12.

What is the maximum resistance which can be made using five resistors each of 1/5 $\Omega$ ?

a)

$\frac{1}{5}\Omega$

b)

$5\Omega$

c)

$10\Omega$

d)

$1\Omega$

13.

Assertion: Conductors allow the current to flow through themselves.

Reason: They have free charge carriers.

(a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

(b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

(c) Assertion is true but the Reason is false.

(d) The statement of the Assertion is false but the Reason is true.

a)

(a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

b)

(b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

c)

(c) Assertion is true but the Reason is false.

d)

(d) The statement of the Assertion is false but the Reason is true.

14.

What is the commercial unit of electrical energy?

a)

Joules

b)

Kilojoules

c)

Kilowatt-hour

d)

Watt-hour

15.

An electric bulb is connected to a 220V generator. The current is 0.50 A. What is the power of the bulb?

a)

440 W

b)

110 W

c)

55 W

d)

0.0023 W

class10 Electricity

Total questions: 15

Worksheet time: 1hrs 15mins

Similar Resources on Wayground