Deck 12: Electrical Circuit and Current

Question 1

As compared to the volume occupied by gas, the volume of particles is

A)more
B)infinite
C)negligible
D)less than the volume of gas

Answer 1

negligible

Question 2

Pressure of gas depends on the

A)density of gas
B)mean square speed of gas molecules
C)both A and B
D)temperature

Answer 2

both A and B

Question 3

At standard pressure and temperature the average speed of molecules is

A)400 m s^-1
B)500 m s^-1
C)600 m s^-1
D)700 m s^-1

Answer 3

400 m s^-1

Question 4

Speed of sound in water is 1500 m s^-1, depth of water when reflected sound waves are detected after 0.40 s is {{}}

A)700 m
B)600 km
C)600 m
D)750 km

Question 5

If a snail crawls 12 cm in 60 s then it's average speed in mm s^-1 is {{}}

A)2 mm s^-1
B)5 mm s^-1
C)10 mm s^-1
D)20 mm s^-1

Question 6

Speed of a body in particular direction can be called

A)acceleration
B)displacement
C)velocity
D)distance

Question 7

If distance is increasing uniformly with time, then velocity is

A)increasing
B)decreasing
C)constant
D)zero

Question 8

If the slope of a graph is zero and so the displacement, then velocity is

A)increasing
B)decreasing
C)constant
D)zero

Question 9

Speed of snail as compared to speed of a car will be in units {{}}

A)cm s^-1
B)m s^-1
C)km s^-1
D)km h-1

Question 10

{{}} If a river flows from west to east with constant velocity of 1.0 m s^-1 and a boat leaves south bank heading towards north with velocity of 2.40 m s^-1 , then resultant velocity of boat is

A)2.6 m s^-1
B)2.7 m s^-1
C)2.8 m s^-1
D)2.9 m s^-1

Question 11

Two sides of a rectangular table are 0.8 m and 1.2 m, the displacement of spider when it runs a distance of 2.0 m is

A)1.5 m
B)1.4 m
C)1.6 m
D)1.7 m

Question 12

Distance travelled by a body in time 't' is

A)instantaneous speed
B)average velocity
C)average acceleration
D)instantaneous acceleration

Question 13

Displacement is a

A)scalar quantity
B)vector quantity
C)base quantity
D)derived quantity

Question 14

A car is travelling at 15 m s^-1, the distance it will travel in 1 hour is {{}}

A)54 km
B)55 km
C)56 km
D)57 km

Question 15

A car travelled south-west for 200 miles depicts

A)distance
B)speed
C)velocity
D)displacement

Question 16

Sum of e.m.f around any loop equals

A)sum of current
B)sum of potential difference
C)sum of resistances
D)sum of charges passing through it per second

Question 17

Current entering and leaving a point in a circuit should be

A)equal
B)decreasing
C)increasing
D)variable

Question 18

Current through each resistor when they are connected in series is

A)different
B)same
C)can be both A and B
D)decreasing

Question 19

If a billion electrons enter a point in 1 s, then number of electrons leaving that point in 1 s are

A)2 billion
B)3 billion
C)1 billion
D)10 billion

Question 20

Three resistances 20 Ω, 30 Ω and 60 Ω are connected in parallel, their combined resistance is given by

A)110 Ω
B)50 Ω
C)20 Ω
D)10 Ω

Question 21

Kirchhoff's 2nd law deals with

A)current in circuit
B)voltage in circuit
C)e.m.f in circuit
D)both B and C

Question 22

Combined resistance of 5 Ω and 10 Ω is equal to

A)10 Ω
B)16 Ω
C)15 Ω
D)20 Ω

Question 23

Two 10 Ω resistors are connected in parallel, their equivalent resistance is

A)5 Ω
B)0.2 Ω
C)15 Ω
D)20 Ω

Question 24

Kirchhoff's 2nd law is consequence of law of conservation of

A)energy
B)charge
C)momentum
D)power

Question 25

Ammeter should always have a

A)high resistance
B)low resistance
C)low voltage
D)high voltage