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Worksheetstechnostream quize round 1
Total questions: 30
Worksheet time: 23mins
Charge in motion is called...
Retentivity
Conductance
Current
Resistance
Current
The unit of potential difference is the
Farad
Watt
Siemens
Volt
Suppose you double the voltage in a simple DC circuit, and cut the resistance in half. The current will become
Half as great
Twice as great
The same as it was before
Four times as great
The DC voltage in a circuit is 550mV and the current is 7.2mA. What is the resistance?
38 ohms
76 ohms
40 ohms
84 ohms
A material that has extremely high electrical resistance is known as
A semiconductor
A paraconductor
A resistor
An insulator
The length of time between a point in one cycle and the same point in the next cycle of an AC wave is the
Frequency
Magnitude
Amplitude
Period
A capacitor stores electrical energy as
Current
Voltage
A magnetic field
An electric field
What is current in a circuit with a potential difference of 240V and a resistance of 75 ohms?
3.0 A
3.5 A
2.8 A
3.2A
When electrical current flows in a DC circuit, it flows from
Positive to negative
The switch to the resistor
The inductor to the capacitor
Negative to positive
A parallel circuit consists of four 16 ohm resistors. What is the total resistance?
32 ohms
64 ohms
2 ohms
4 ohms
A variable resistor that adjusts voltages in a circuit is
A capacitor
A flux capacitor
A potentiometer
An inductor
If a material has a low resistance,
It is a good conductor
It is a poor conductor
The current flows mainly in the form of holes
Current can only flow in one direction
The rate at which electrons (charge carriers) flow is measured in
Amperes
Coulombs
Volts
Watts
A component in an electrical circuit which can store energy but will not allow D/C current to flow is
A resistor
An impedance
A transformer
A capacitor
Which of the following is NOT a fundamental electronic component?
Resistor
Capacitor
Inductor
Motor
If Power equals Current times Voltage (P = l x V) then how do you find the Current if you know the Power and Voltage
Divide both sides by the power
Multiply both sides by the current
Multiply both sides by the voltage
Divide both sides by the voltage
Speed of sound is maximum in which among the following?
Solids
liquids
Gases
Vaccum
Which of the following is/are correct about Kinetic energy?
Kinetic energy can be positive or negative
Kinetic energy is independent of frame of reference
Both a and b
None of the above
What is the value of acceleration due to gravity at the centre of the earth?
1N/kg
0
-9.8N/kg
9.8 N/kg
What do we call the minimum velocity with which a body must be projected up, so as to enable it to just overcome the gravitational pull?
Orbital velocity
Gravitational velocity
Escape velocity
None of the above
Where was India’s first national Museum opened
Delhi
Hyderabad
Rajasthan
Mumbai
In 2019, Which popular singer was awarded the Bharat Ratna award?
Lata Mangeshkar
Asha Bhosle
Bhupen Hazarika
Manna Dey
The world’s nation 5G mobile network was launched by which country?
Japan
Asia
South Korea
Malaysia
The father of Indian missile technology is _________________?
Dr Homi Bhabha
Dr Chidambaram
Dr U.R. Rao
Dr A.P.J. Abdul Kalam
In 2017, Who was appointed as the new Brand Ambassador for Swachh Bharat Mission?
Kangana Ranaut
Priyanka Chopra
Anushka Sharma
Shilpa Shetty
A pure substance which contains only one type of atom is called ————–.
An element
a compound
a solid
a liquid
The smallest particle that can take part in chemical reactions is ————–.
Atom
molecule
Both (a) and (b)
none of these
Which of the following is a homogeneous mixture?
Mixture of soil and water
Sugar solution
Mixture of sugar, salt and sand
Iodised table salt
Formation of CO and CO2 illustrates the law of ————–.
Law of conservation of mass
Law of Reciprocal proportion
Law of Constant Proportion
Law of Multiple Proportion
The prefix 1018 is ————–.
giga
exa
kilo
mega
