MEDIUM
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How energy transfer in an electric circuit?

Important Questions on Current Electricity

MEDIUM
Draw any four symbols of the components used in electric circuit.
EASY

Write the conventional symbol of the following component used in electric circuit diagram-

An electric cell

EASY

Write the conventional symbol of the following component used in electric circuit diagram-

Electric bulb

MEDIUM

How does an electric current flow in a closed circuit? Explain.

HARD
Birds sitting on overhead cables do not get electric shock. Why?
EASY

Match the following:

  Column A   Column B
1 Tungsten A High resistance
2 Nichrome wire B Bulb
3 Soft iron C Low resistance
4 Mica D Electric iron
5 Copper E Electromagnet

 

EASY
Which of the following is the symbol of electric cell?
MEDIUM
Draw a well-labelled diagram of a closed electric circuit.
EASY
When negative terminals of all the cells are connected together, the cells are connected in _____.
EASY
Give the electrical symbols for electric bulb.
EASY

Match the following.

Column A Column B
1. Battery a. circuit
2. Bell b. safety
3. Geyser c. cells
4. Switch d. heating coil
5. Fuse e. electromagnetic

 

EASY
Give the electrical symbols for electric cell.
EASY
Name the types of circuits.
EASY
In which direction does the current flow in a closed circuit?
EASY
No appliances work when the circuit is _____(open/closed).
EASY
Which of the following is not a circuit element?
EASY
Which of the following parts of an electrical plug carries the highest voltage?
EASY
Give the electrical symbols for battery.
EASY
The diagram below in the figure shows a cell of e.m.f. ε=2 volt and internal resistance r=1 ohm to an external resistance R=4 ohm. The ammeter A measures the current in the circuit and the voltmeter V measures the terminal voltage across the cell. What will be the readings of the ammeter and voltmeter when the key K is open?
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