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In the figure shown ‘R’  is a fixed conducting fixed ring of negligible resistance and radius ‘a’PQ  is a uniform rod of resistance r. It is hinged at the centre of the ring and rotated about this point in clockwise direction with a uniform angular velocity ω. There is a uniform magnetic field of strength ‘B’  pointing inwards ‘r’  is a stationary resistance
  • a)
    Direction of current in external ‘r’  is from centre to circumference
  • b)
    Current through ‘r’  is 
  • c)
    Direction of current in external ‘r’  is from circumference to centre
  • d)
    Current through ‘r’  is zero
Correct answer is option 'B,C'. Can you explain this answer?
Verified Answer
In the figure shown‘R’ is a fixed conducting fixed ring of...
Equivalent circuit :

By nodal equation :
nodal



also direction of current in ‘r’ will be towards negative terminal i.e. from rim to origin.
Alternatively; by equivalent of cells (figure (ii)):

The correct answers are: Current through ‘r’  is  Direction of current in external ‘r’  is from circumference to centre
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Most Upvoted Answer
In the figure shown‘R’ is a fixed conducting fixed ring of...
Equivalent circuit :

By nodal equation :
nodal



also direction of current in ‘r’ will be towards negative terminal i.e. from rim to origin.
Alternatively; by equivalent of cells (figure (ii)):

The correct answers are: Current through ‘r’  is  Direction of current in external ‘r’  is from circumference to centre
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Community Answer
In the figure shown‘R’ is a fixed conducting fixed ring of...
Equivalent circuit :

By nodal equation :
nodal



also direction of current in ‘r’ will be towards negative terminal i.e. from rim to origin.
Alternatively; by equivalent of cells (figure (ii)):

The correct answers are: Current through ‘r’  is  Direction of current in external ‘r’  is from circumference to centre
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In the figure shown‘R’ is a fixed conducting fixed ring of negligible resistance and radius‘a’.PQ is a uniform rod of resistancer. It is hinged at the centre of the ring and rotated about this point in clockwise direction with a uniform angular velocityω.There is a uniform magnetic field of strength‘B’ pointing inwards‘r’ is a stationary resistancea)Direction of current in external‘r’ is from centre to circumferenceb)Current through‘r’ isc)Direction of current in external‘r’ is from circumference to centred)Current through‘r’ is zeroCorrect answer is option 'B,C'. Can you explain this answer?
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In the figure shown‘R’ is a fixed conducting fixed ring of negligible resistance and radius‘a’.PQ is a uniform rod of resistancer. It is hinged at the centre of the ring and rotated about this point in clockwise direction with a uniform angular velocityω.There is a uniform magnetic field of strength‘B’ pointing inwards‘r’ is a stationary resistancea)Direction of current in external‘r’ is from centre to circumferenceb)Current through‘r’ isc)Direction of current in external‘r’ is from circumference to centred)Current through‘r’ is zeroCorrect answer is option 'B,C'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about In the figure shown‘R’ is a fixed conducting fixed ring of negligible resistance and radius‘a’.PQ is a uniform rod of resistancer. It is hinged at the centre of the ring and rotated about this point in clockwise direction with a uniform angular velocityω.There is a uniform magnetic field of strength‘B’ pointing inwards‘r’ is a stationary resistancea)Direction of current in external‘r’ is from centre to circumferenceb)Current through‘r’ isc)Direction of current in external‘r’ is from circumference to centred)Current through‘r’ is zeroCorrect answer is option 'B,C'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the figure shown‘R’ is a fixed conducting fixed ring of negligible resistance and radius‘a’.PQ is a uniform rod of resistancer. It is hinged at the centre of the ring and rotated about this point in clockwise direction with a uniform angular velocityω.There is a uniform magnetic field of strength‘B’ pointing inwards‘r’ is a stationary resistancea)Direction of current in external‘r’ is from centre to circumferenceb)Current through‘r’ isc)Direction of current in external‘r’ is from circumference to centred)Current through‘r’ is zeroCorrect answer is option 'B,C'. Can you explain this answer?.
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