NEW
Font size
WorksheetsW/S CALCULATION & SCIENCE
Total questions: 25
Worksheet time: 1hrs 15mins
If a lamp is labelled 250W/5A, then rated voltage will be _____
50V
100V
150V
250V
A voltage of 220V is connected across a 1 K ohms resistor.The power consumption of lamp is ________
48.1W
48.2W
48.3W
48.4W
ohm's law is the relation between voltage(V), current(I) and resistance(R), according to which,______
I=V/R
V=I/R
I=VR
R=I/V
Given that voltage ( V ) = 3.6V & current (I)=0.2A. The resistance (R) by using Ohm's law is _____
0.18Ω
1.8Ω
18Ω
20Ω
The unit of current is Ampere. It is measured by_______
Ammeter
voltmeter
ohmmeter
Frequency meter
Electricity is a kind of ______
Heat
Energy
Magnet
Chemical
"Electric current" is classified as Direct current ( DC ) and _______
Magnetic current
Heating current
Alternating current
Chemical current
Resistance is the property of a substance due to which it opposes the flow if electric current. It's unit is ________
Ohm
Volt
Ampere
emf
Find the main supply Voltage (V) of iron box in Volt, if coil Resistance (R) =150Ω, Current I = 0.733A
55V
100V
110V
220V
A 6V bulb needs 0.5A current, find the resistance R.
12Ω
10Ω
3Ω
1.2Ω
Resistance of a conductor increases when
Specific resistance of the conductor decreases
Length of the conductor increases
Cross-sectional area of conductor decreases
Conductivity of the wire increases
What will be the value of resistance (R) If Current (I) = 0.12A and Voltage (V) = 88V
733Ω
684Ω
514Ω
136Ω
_________ can help Electicity to flow one point to another
Magnetic force
Electro motive force
Electric force
Gravitational force
In a series circuit, the current in each resistance remains _______
Less
More
Double
Same
Flow of electron is from _____ terminal to _____ terminal
Positive, Negative
Positive, Positive
Negative, Positive
Negative, Negative
Direction and magnitude of ________ current changes instant to instant
Direct from
Dynamic
Static
Alternating
Direction and magnitude of ____ current is constant
Direct
Dynamic
Static
Alternating
Voltmeter is connected in ______ connection.
Series
Unitary
Parallel
None of the above
Flow of electrons in a conductor is called ______
Power
Temperature co efficient
Electric current
Resistance
_______ Is the force responsible for the flow of current from 1 end to Other end in a conductor
Electric voltage
Potential difference
Resistance
Electro motive force
The force due to which electrons flow in a circuit is called ________
Electric voltage
Electro motive force
Electric current
Potential difference
The rate at which electrical work is done in an electric circuit is called _______
Electrical power
Electric energy
Work
Force
Determine the current flowing in a bulb if power P = 60 W and voltage V= 220V
1.32 A
0.46A
0.37A
0.27A
A 60 watt bulb is connected to a voltage of 240V. Find the current flowing in the circuit in Amperes.
4A
1.5A
0.25A
0.025A
Find the resistance of electric kettle of 2000 W and 220 V
24.2Ω
23.5Ω
10.5Ω
11.2Ω
