
Electricity
Presentation
•
Physics
•
10th Grade
•
Medium
Setu Srivastava
Used 63+ times
FREE Resource
10 Slides • 11 Questions
1
Physics, Class- 10
Electricity
Electric circuits
2
Electricity travels in circuits
Electricity must have a complete path, or electrical circuit, before the electrons can move.
https://youtu.be/oB1v-wh7EGU
3
4
5
Multiple Choice
6
Multiple Choice
Electric current is defined as
detect electric current
negative terminal to positive terminal
positive terminal to negative terminal
the flow rate of electric charges through a conductor
7
Multiple Choice
What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?
30 A
0.3 A
0.5 A
5 A
8
Open Ended
Calculate the number of electrons constituting one coulomb of charge.
(Hint: e =1.6 × 10^-19 C)
9
Open Ended
A current of 1 A is drawn by a filament of an electric bulb. Calculate the number of electrons passing through a cross-section of the filament in 16 s.
(Hint: I = Q/t and Q = ne)
10
Multiple Choice
which of the following represents voltage?
Work done / (current x time)
work done x charge
(wordone x time) / current
work done x charge x time
11
Multiple Choice
When an electrochemical cell no longer works, it is out of charge and must be recharged before it can be used again.
True
False
12
Multiple Choice
An electrochemical cell can be a source of charge in a circuit. The charge that flows through the circuit originates in the cell.
True
False
Partly true
13
Battery is the source of energy required to push the charges.
The charge that flows through a circuit originates in the wires of the circuit. The charge carriers in wires are simply the electrons possessed by the atoms that make up the wires.
14
Multiple Choice
Charge becomes used up as it flows through a circuit. The amount of charge that exits a light bulb is less than the amount that enters the light bulb.
True
False
15
The rate at which charge flows is everywhere the same within an electric circuit.
The rate at which charge flows into a light bulb is the same as the rate at which charge flows out of a light bulb.
16
A battery is a device that stores chemical energy and converts it to electrical energy.
The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit.
17
Multiple Choice
The local electrical utility company supplies millions and millions of electrons to our homes everyday.
True
False
18
Multiple Choice
Charge flows through circuits at very high speeds. This explains why the light bulb turns on immediately after the wall switch is flipped
True
False
19
Charge moves abnormally slowly - on average, about 1 meter in an hour - through a circuit.
Yet as soon as a switch is turned to ON, charge located everywhere within the circuit begins to move.
20
21
Physics, Class- 10
Electricity
Electric circuits
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