303360
What is the minimum number of cells require to make a battery?
1 5 cells
2 2 cells
3 1 cell
4 6 cells
Explanation:
2 cells A combination of two or more cells is called a battery. The minimum number of cells require to make a battery is 2.
ELECTRIC CURRENT AND ITS EFFECTS
303361
Fuse wire is made up of alloys of:
1 High boiling point
2 High melting point
3 Low melting point
4 Low boiling point
Explanation:
Low melting point Fuse wire is made up of an alloy of tin and lead with a very low melting point.This fuse wire melt quickly and break when large electric currents are passed through them.
ELECTRIC CURRENT AND ITS EFFECTS
303362
Which of the following is a characteristic of a buzzer?
1 It has different mechanism from electric bell.
2 It has higher frequency of collision of gong and hammer.
3 It uses only AC power supply.
4 None of the above.
Explanation:
It has higher frequency of collision of gong and hammer. In a buzzer, the simplest sort of doorbell, an electromagnet is used to operate a self - interrupting circuit. You can see how this system works in the diagram below. Click and hold the doorbell button to see how the buzzer works. This breaks the doorbell circuit, which shuts off the electromagnet.characteristic of a buzzer It has higher frequency of collision of gong and hammer.
ELECTRIC CURRENT AND ITS EFFECTS
303363
In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer? 3
1 Gravitational force alone
2 Electrostatic force alone
3 Magnetic force alone
4 Frictional force alone
Explanation:
Magnetic force alone When the electric circuit is completed the electromagnet is activated and the soft iron armature is strongly pulled. The hammer strikes the gong producing the sound. So, the magnetic force is responsible for the movement of hammer.
303360
What is the minimum number of cells require to make a battery?
1 5 cells
2 2 cells
3 1 cell
4 6 cells
Explanation:
2 cells A combination of two or more cells is called a battery. The minimum number of cells require to make a battery is 2.
ELECTRIC CURRENT AND ITS EFFECTS
303361
Fuse wire is made up of alloys of:
1 High boiling point
2 High melting point
3 Low melting point
4 Low boiling point
Explanation:
Low melting point Fuse wire is made up of an alloy of tin and lead with a very low melting point.This fuse wire melt quickly and break when large electric currents are passed through them.
ELECTRIC CURRENT AND ITS EFFECTS
303362
Which of the following is a characteristic of a buzzer?
1 It has different mechanism from electric bell.
2 It has higher frequency of collision of gong and hammer.
3 It uses only AC power supply.
4 None of the above.
Explanation:
It has higher frequency of collision of gong and hammer. In a buzzer, the simplest sort of doorbell, an electromagnet is used to operate a self - interrupting circuit. You can see how this system works in the diagram below. Click and hold the doorbell button to see how the buzzer works. This breaks the doorbell circuit, which shuts off the electromagnet.characteristic of a buzzer It has higher frequency of collision of gong and hammer.
ELECTRIC CURRENT AND ITS EFFECTS
303363
In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer? 3
1 Gravitational force alone
2 Electrostatic force alone
3 Magnetic force alone
4 Frictional force alone
Explanation:
Magnetic force alone When the electric circuit is completed the electromagnet is activated and the soft iron armature is strongly pulled. The hammer strikes the gong producing the sound. So, the magnetic force is responsible for the movement of hammer.
303360
What is the minimum number of cells require to make a battery?
1 5 cells
2 2 cells
3 1 cell
4 6 cells
Explanation:
2 cells A combination of two or more cells is called a battery. The minimum number of cells require to make a battery is 2.
ELECTRIC CURRENT AND ITS EFFECTS
303361
Fuse wire is made up of alloys of:
1 High boiling point
2 High melting point
3 Low melting point
4 Low boiling point
Explanation:
Low melting point Fuse wire is made up of an alloy of tin and lead with a very low melting point.This fuse wire melt quickly and break when large electric currents are passed through them.
ELECTRIC CURRENT AND ITS EFFECTS
303362
Which of the following is a characteristic of a buzzer?
1 It has different mechanism from electric bell.
2 It has higher frequency of collision of gong and hammer.
3 It uses only AC power supply.
4 None of the above.
Explanation:
It has higher frequency of collision of gong and hammer. In a buzzer, the simplest sort of doorbell, an electromagnet is used to operate a self - interrupting circuit. You can see how this system works in the diagram below. Click and hold the doorbell button to see how the buzzer works. This breaks the doorbell circuit, which shuts off the electromagnet.characteristic of a buzzer It has higher frequency of collision of gong and hammer.
ELECTRIC CURRENT AND ITS EFFECTS
303363
In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer? 3
1 Gravitational force alone
2 Electrostatic force alone
3 Magnetic force alone
4 Frictional force alone
Explanation:
Magnetic force alone When the electric circuit is completed the electromagnet is activated and the soft iron armature is strongly pulled. The hammer strikes the gong producing the sound. So, the magnetic force is responsible for the movement of hammer.
303360
What is the minimum number of cells require to make a battery?
1 5 cells
2 2 cells
3 1 cell
4 6 cells
Explanation:
2 cells A combination of two or more cells is called a battery. The minimum number of cells require to make a battery is 2.
ELECTRIC CURRENT AND ITS EFFECTS
303361
Fuse wire is made up of alloys of:
1 High boiling point
2 High melting point
3 Low melting point
4 Low boiling point
Explanation:
Low melting point Fuse wire is made up of an alloy of tin and lead with a very low melting point.This fuse wire melt quickly and break when large electric currents are passed through them.
ELECTRIC CURRENT AND ITS EFFECTS
303362
Which of the following is a characteristic of a buzzer?
1 It has different mechanism from electric bell.
2 It has higher frequency of collision of gong and hammer.
3 It uses only AC power supply.
4 None of the above.
Explanation:
It has higher frequency of collision of gong and hammer. In a buzzer, the simplest sort of doorbell, an electromagnet is used to operate a self - interrupting circuit. You can see how this system works in the diagram below. Click and hold the doorbell button to see how the buzzer works. This breaks the doorbell circuit, which shuts off the electromagnet.characteristic of a buzzer It has higher frequency of collision of gong and hammer.
ELECTRIC CURRENT AND ITS EFFECTS
303363
In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer? 3
1 Gravitational force alone
2 Electrostatic force alone
3 Magnetic force alone
4 Frictional force alone
Explanation:
Magnetic force alone When the electric circuit is completed the electromagnet is activated and the soft iron armature is strongly pulled. The hammer strikes the gong producing the sound. So, the magnetic force is responsible for the movement of hammer.
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