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प्रश्न
Observe the following figure:
If the current in the coil A is changed, will some current be induced in the coil B? Explain.
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उत्तर
A current will be induced in Coil B. When there is a change in the current in Coil A, a magnetic field is associated with it. This induces a potential difference between the two coils which gives rise to a current in Coil B. This change can be noted by observing the deflection in the galvanometer.
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संबंधित प्रश्न
A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is ______.
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What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?
State qualitatively the effect of inserting an iron core into a current-carrying solenoid.
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Describe how you will locate a current-carrying wire concealed in a wall.
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List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?
What type of core should be put inside a current-carrying solenoid to make an electromagnet?
In a statement of Fleming's left-hand rule, what do the following represent?
(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.
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Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.
State Fleming's left-hand rule. Explain it with the help of labelled diagrams.
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45°
60°
90°
180°
A horizontal wire carries a current as shown in Figure below between magnetic poles N and S:
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(a) in the direction the current
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(d) vertically upwards
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i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine
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Reason (R): The net charge on a current carrying conductor is always zero.
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