A square coil ABCD is placed in an x-y plane with its centre as the origin. A long straight wire passing through origin carries a current in negative z-direction. Current in this wire increases with time. The induced current in the coil is:
A. Clockwise
B. Anticlockwise
C. Zero
D. alternating
Answer
637.2k+ views
Hint: To predict the direction of the induced current in the coil, we need to refer accordingly with Lenz law of Electromagnetic induction which states that the induced electromotive force with different polarities induces a current whose magnetic field opposes the change in magnetic flux through the loop in order to ensure that original flux is maintained through the loop when current flows in it.
Complete step-by-step answer:
The information given to us:
A long straight wire passing through origin carries a current in negative z-direction and Current in this wire increases with time, that is the magnetic flux linked to the coil changes and increases with time.
In accordance with the Lenz law, the resultant induced electromotive force would induce a current in the loop whose magnetic field would tend to oppose the change in the magnetic flux i.e. increment in the magnetic flux, thus consequently trying to reduce it by inducing a resultant current whose magnetic field is in the opposite direction to the one in the initial phase that is
Magnetic field of the resultant induced current will be out of the plane and subsequently the direction of the resultant induced current will be anti-clockwise.
Therefore the correct option will be (B) anticlockwise
So, the correct answer is “Option (B)”.
Note: One is advised to note and remember that Lenz’s law depends on the principle of conservation of energy and Newton’s third law and is the most convenient method to determine the direction of resultant induced current.
Complete step-by-step answer:
The information given to us:
A long straight wire passing through origin carries a current in negative z-direction and Current in this wire increases with time, that is the magnetic flux linked to the coil changes and increases with time.
In accordance with the Lenz law, the resultant induced electromotive force would induce a current in the loop whose magnetic field would tend to oppose the change in the magnetic flux i.e. increment in the magnetic flux, thus consequently trying to reduce it by inducing a resultant current whose magnetic field is in the opposite direction to the one in the initial phase that is
Magnetic field of the resultant induced current will be out of the plane and subsequently the direction of the resultant induced current will be anti-clockwise.
Therefore the correct option will be (B) anticlockwise
So, the correct answer is “Option (B)”.
Note: One is advised to note and remember that Lenz’s law depends on the principle of conservation of energy and Newton’s third law and is the most convenient method to determine the direction of resultant induced current.
Recently Updated Pages
Which of the following graphs shows the variation of class 12 physics CBSE

Draw a labelled diagram of the human male reproductive class 12 biology CBSE

Describe the experiment to compare the emf of two cells class 12 physics CBSE

What is standard hydrogen electrode

What is conventional current and electric current class 12 physics CBSE

2Bromopentane is treated with an alcoholic KOH solution class 12 chemistry CBSE

Trending doubts
Draw a labelled sketch of the human eye class 12 physics CBSE

Which are the Top 10 Largest Countries of the World?

A member of Simon commission later became Prime Minister class 12 social science CBSE

Draw ray diagrams each showing i myopic eye and ii class 12 physics CBSE

Give one example of a reptile that is viviparous class 12 biology CBSE

Which is the correct genotypic ratio of mendel dihybrid class 12 biology CBSE

