Network Theory | Fill in the Blanks Type Questions

Q. Charge on an electron is ___________ C.

Answer
1.602 × 10-19

Q. The mass of electron is ___________ Kg.

Answer
9.107 × 10-31

Q. ___________ electrons per second will produce current of 1 A.

Answer
6.25 × 1018

Q. ___________ is considered dangerous for human the body.
(0.5, 1, 25, 50 mA)

Answer
50 mA

Q. The rate of movement of charge in a conductor is known as ___________.

Answer
electric current

Q. The ampere is the current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section and placed 1 m apart in vacuum, would produce between these conductors a force of ___________ N per metre of length.

Answer
2 × 10-7

Q. ___________ is the force that causes a current to flow.

Answer
EMF

Q. Voltage across a resistance is called the ___________ .

Answer
voltage drop

Q. Voltage is a form of ___________ energy.

Answer
potential

Q. 1 V = 1  ___________ per coulomb.

Answer
joule

Q. Electric pressure is also called the ___________ .

Answer
voltage

Q. 1 Volt is equal to 1 joule per ___________ .

Answer
coulomb

Q. The ratio of voltage and current ___________ .

Answer
remains constant

Q. The curve representing Ohm’s law is ___________ .

Answer
linear

Q. A linear resistor is one which obeys ___________ law.

Answer
Ohm’s

Q. For the same dimensions of a conductor its resistance depends upon the ___________ of the material.

Answer
resistivity

Q. Resistance of human body is about ___________ ohm.

Answer
1000

Q. If the circuit voltage is reduced to half and the resistance is doubled, the current will become ___________ .

Answer
a quarter

Q. For a fixed supply voltage the current flowing through a conductor will increase when its length is ___________

Answer
reduced

Q. Elements of electric heaters and filament lamps are made of high resistivity materials. This is done to ___________ the filament length.

Answer
reduce

Q. The property of a conductor due to which it induces the flow of current through the conductor is called the ___________ .

Answer
conductance

Q. The diameter of wire is reduced to one half, keeping the length constant. The new resistance will be ___________ times the original value.

Answer
four

Q. If the diameter of the wire is halved, its current carrying capacity will become approximately ___________.

Answer
one-fourth

Q. Electrical conductivity is measured in ___________ .

Answer
S/m

Q. With the rise in temperature the resistance of carbon ___________.

Answer
decreases

Q. Resistance of carbon filament lamp ___________ with the increase in supply voltage.

Answer
decreases

Q. Two resistors of 12 ohm and 4 ohm respectively are connected in series. A short is placed across the combination. The effective resistance will be___________.

Answer
zero

Q. A series arrangement of n identical resistors is changed into n parallel arrangement. The new equivalent resistance will become of ___________ of the original resistance.

Answer
1/n2

Q. When one leg of a parallel circuit gets opened out, the current drawn from the supply will ___________.

Answer
reduce

Q. Three resistors, each of R ohms are connected to form a triangle. The resistance between any two terminals will be ___________ ohm.

Answer
2/3 R/su_spoiler]

Q. Twelve identical wires of resistance 6 ohm each are arranged to form the edges of a cube. The effective resistance between the opposite corners of the cube will be ___________.

Answer
5 ohm
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