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WorksheetsKAUN BANEGA PHYSICS TALENT-1
Total questions: 41
Worksheet time: 2hrs 53mins
key
a material that has almost zero resistance when it is cooled to low temperatures
superconductor
potential difference
voltage
battery
the difference in electrical potential energy between two places in an electric field
superconductor
potential difference
voltage
battery
a device that converts chemical energy to electrical energy
superconductor
potential difference
voltage
battery
the voltage in a circuit equals the product of the current and the resistance
Ohm's law
electric circuit
series circuit
parallel circuit
a complete path through which charge can flow
Ohm's law
electric circuit
series circuit
parallel circuit
What is the unit we use to measure electric current?
ampere (amp)
ohm
volt
newton
Which is the electrical symbol for a wire?
Which is the electrical symbol for 2 batteries?
Which is not a conductor
Silver
Bakelite
Copper
Aluminium
The device used for measuring potential difference is known as
Ammeter
Potentiometer
Voltmeter
Galvanometer
Calculate the work done in moving a charge of 4coulambs from a point at 220V to another point at 230V
10J
20J
30J
40J
Electric current is a
Flow of protones
Flow of electrones
Flow of electric charges
Both option 2 and 3
Variable resistance is also known as
Voltage
Rheostate
Circuit
Watt
Keeping the potential difference constant , the resistance of a circuit is doubled . By how much does the current change?
Becomes twice
Becomes half
Becomes 1/4
None of the above
16. Which of the following I-V graph represents ohmic conductors?
(a) A
(b) B
(c) C
(d) D
What is current?
It is the flow of atoms per unit time.
It is the acceleration of charge flow.
It is the rate of flow of electric charge.
It is the work done of a charge in a circuit.
Which arrow represents the direction of electron flow?
arrow 1
arrow 2
Which arrow represents the direction of conventional current?
arrow 1
arrow 2
What does this instrument measure? How should it be connected in a circuit?
This instrument measures current. It should be connected in parallel.
This instrument measures current. It should be connected in series.
This instrument measures potential difference. It should be connected in parallel.
This instrument measures electromotive force. It should be connected in parallel.
What does this instrument measure? How should it be connected in a circuit?
This instrument measures current. It should be connected in parallel.
This instrument measures current. It should be connected in series.
This instrument measures potential difference. It should be connected in parallel.
This instrument measures electromotive force. It should be connected in series.
What is the formula of current?
I = Q x t
I = Q / t
Q = I / t
A circuit has 1250 C flowing through it for 25 s.
What is the current in the circuit?
25 A
50 A
1250 A
6250 A
What is the time taken when 1500 C of charge flows through a fixed point to give a current of 10 A?
1.5 min
2.0 min
2.5 min
3.0 min
A current of 3.0 A flows in a wire connected to the terminals of a battery.
Calculate the total electric charge which passes through the circuit in 5.0 minutes.
0.10 C
0.60 C
15 C
900 C
A current of 2.0 A is produced when 500 C flow from X to Y in a circuit.
Calculate the time taken for 500 C to move from X to Y.
0.0040 s
250 s
1000 s
A copper wire is connected across the terminals of battery of e.m.f. 9.0 V.
Calculate the electrical energy used to move 50 C of charge across the complete circuit.
0.18 J
5.56 J
450 J
A copper wire is connected across the terminals of battery of e.m.f. 9.0 V.
If 30 C takes 150 s to complete the circuit, calculate the current flow.
0.20 A
5.0 A
4500 A
Ohm's law states (a) directly proportional to the flow of current
Why is electrical wiring usually are covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
What contribution did Thomas Edison make toward the study of electricity?
He invented the light bulb
He invented a generator that would produce electricity
He discovered the nucleus of an atom
He discovered that lightning is a form of electricity
What voltage is needed to cause a 50A current flow through a 10Ω resistor?
15V
500V
500 kV
0.2V
